2,165 results match your criteria Spatial Neglect


Spatial Attention Deficits Are Causally Linked to an Area in Macaque Temporal Cortex.

Curr Biol 2019 Feb 9. Epub 2019 Feb 9.

Laboratory of Sensorimotor Research, National Eye Institute, NIH, Bethesda, MD 20892, USA. Electronic address:

Spatial neglect is a common clinical syndrome involving disruption of the brain's attention-related circuitry, including the dorsocaudal temporal cortex. In macaques, the attention deficits associated with neglect can be readily modeled, but the absence of evidence for temporal cortex involvement has suggested a fundamental difference from humans. To map the neurological expression of neglect-like attention deficits in macaques, we measured attention-related fMRI activity across the cerebral cortex during experimental induction of neglect through reversible inactivation of the superior colliculus and frontal eye fields. Read More

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http://dx.doi.org/10.1016/j.cub.2019.01.028DOI Listing
February 2019

Multiple left-to-right spatial representations of number magnitudes? Evidence from left spatial neglect.

Exp Brain Res 2019 Feb 9. Epub 2019 Feb 9.

Department of Psychology, Rome University "La Sapienza", Rome, Italy.

The SNARC effect reflects the observation that when healthy observers with left-to-right reading habits are asked to compare the magnitude or to judge the parity of numbers, they provide faster reaction times (RT) to small numbers with left-sided responses and faster RTs to large numbers with right-sided responses. In magnitude comparison (MC), right brain damaged patients with left-sided neglect typically show a pathologically enlarged SNARC for large numbers and selective slowing to numbers that are immediately lower than the numerical reference (e.g. Read More

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http://dx.doi.org/10.1007/s00221-019-05483-5DOI Listing
February 2019
1 Read

Left hemispatial neglect and overt orienting in naturalistic conditions: Role of high-level and stimulus-driven signals.

Cortex 2019 Jan 14;113:329-346. Epub 2019 Jan 14.

Neuroimaging Laboratory, Santa Lucia Foundation, Rome, Italy; ImpAct Team, Lyon Neuroscience Research Center, Lyon, France.

Deficits of visuospatial orienting in brain-damaged patients affected by hemispatial neglect have been extensively investigated. Nonetheless, spontaneous spatial orienting in naturalistic conditions is still poorly understood. Here, we investigated the role played by top-down and stimulus-driven signals in overt spatial orienting of neglect patients during free-viewing of short videos portraying everyday life situations. Read More

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http://dx.doi.org/10.1016/j.cortex.2018.12.022DOI Listing
January 2019
2 Reads

The impact of urbanization on mental health service provision: a Brazil, Russia, India, China, South Africa and Africa focus.

Curr Opin Psychiatry 2019 Feb 4. Epub 2019 Feb 4.

Department of Psychiatry, University of the Witwatersrand, Johannesburg, South Africa.

Purpose Of Review: Asia and Africa are experiencing rapid urbanization and rural growth. This review focuses on the impact of urbanization on preventive and treatment mental health service provision with attention to the Brazil, Russia, India, China, and South Africa economic bloc and sub-Saharan Africa.

Recent Findings: A search of the PubMed, Academic Search Ultimate, and Global Health databases, and use of Google Scholar yielded relevant health, environmental, and urban planning research articles from sub-Saharan Africa and Brazil, India, China, and South Africa . Read More

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http://dx.doi.org/10.1097/YCO.0000000000000495DOI Listing
February 2019
3 Reads

A New Standardization of the Bells Test: An Italian Multi-Center Normative Study.

Front Psychol 2018 22;9:2745. Epub 2019 Jan 22.

Centro Cardinal Ferrari, Parma, Italy.

The Bells Test is a cancelation task that is widely used for the diagnosis of unilateral spatial neglect (USN). With the aim of fostering more reliable use of this instrument, we set out to develop new norms adjusted for the possible influence of age, gender and education. We worked on the original version of the test. Read More

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https://www.frontiersin.org/article/10.3389/fpsyg.2018.02745
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http://dx.doi.org/10.3389/fpsyg.2018.02745DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6350444PMC
January 2019
3 Reads

Effect of prism adaptation on neglect hemianesthesia.

Cortex 2019 Jan 14;113:298-311. Epub 2019 Jan 14.

Neuropsychological Service, Rehabilitation Department, A.S.S.T. Valle Olona, Varese, Italy.

Prism adaptation (PA) has proven to be effective in alleviating many signs of unilateral spatial neglect (USN). Generally, the principal improvement after PA treatment was found to be in the high-level cognitive function. Nevertheless, some evidence has also been found for it in somatosensory function. Read More

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http://dx.doi.org/10.1016/j.cortex.2018.12.021DOI Listing
January 2019
1 Read

Hemispheric lateralization of attention processes in the human brain.

Curr Opin Psychol 2019 Jan 4;29:90-96. Epub 2019 Jan 4.

Inserm U 1127, CNRS UMR 7225, Sorbonne Université, Institut du Cerveau et de la Moelle épinière, ICM, Hôpital de la Pitié-Salpêtrière, 75013 Paris, France.

We review recent evidence for the hemispheric lateralization of attentional systems in the human brain. There is abundant anatomical, neuroimaging, and neuromodulatory evidence for a relative lateralization toward the right hemisphere of some of the cortical networks supporting the attentional systems, especially those including the temporo-parietal junction and the ventro-lateral prefrontal cortex. Damage or disconnection of these right-lateralized nodes may produce severe deficits of spatial and nonspatial attention, as in visual neglect, or of inhibitory control. Read More

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http://dx.doi.org/10.1016/j.copsyc.2018.12.023DOI Listing
January 2019
1 Read

The potential role of intrinsic processes in generating abrupt and quasi-synchronous tree declines during the Holocene.

Ecology 2019 Feb;100(2):e02579

Department of Integrative Biology, University of Wisconsin-Madison, Madison, WI, 53706, USA.

Multiple abrupt and sometimes near-synchronous declines in tree populations have been detected in the temperate forests of eastern North America and Europe during the Holocene. Traditional approaches to understanding these declines focus on searching for climatic or other broad-scale extrinsic drivers. These approaches include multi-proxy studies that match reconstructed changes in tree abundance to reconstructed changes in precipitation or temperature. Read More

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http://dx.doi.org/10.1002/ecy.2579DOI Listing
February 2019
1 Read

Direct Gaze Partially Overcomes Hemispatial Neglect and Captures Spatial Attention.

Front Psychol 2018 15;9:2702. Epub 2019 Jan 15.

Department of Neurosciences and Mental Health, Neurology, Hospital de Santa Maria, University of Lisbon, Lisbon, Portugal.

Direct gaze has been shown to be a particularly important social cue, being preferentially processed even when unconsciously perceived. Results from several visual search tasks further suggest that direct gaze modulates attention, showing a faster orientation to faces perceived as looking toward us. The present study aimed to analyze putative modulation of spatial attention by eye gaze direction in patients with unilateral neglect. Read More

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http://dx.doi.org/10.3389/fpsyg.2018.02702DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6340963PMC
January 2019
1 Read

No direction specific costs in trans-saccadic memory.

Neuropsychologia 2019 Jan 26;125:23-29. Epub 2019 Jan 26.

Department of Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, the Netherlands.

Even though we frequently execute saccades, we perceive the external world as coherent and stable. An important mechanism of trans-saccadic perception is spatial remapping: the process of updating information across eye movements. Previous studies have indicated a right hemispheric dominance for spatial remapping, which has been proposed to translate into enhanced trans-saccadic memory for locations that are remapped into the right compared to the left hemisphere in healthy participants. Read More

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http://dx.doi.org/10.1016/j.neuropsychologia.2019.01.014DOI Listing
January 2019
1 Read

'See Me, Feel Me': Prismatic Adaptation of an Alien Limb Ameliorates Spatial Neglect in a Patient Affected by Pathological Embodiment.

Front Psychol 2018 14;9:2726. Epub 2019 Jan 14.

SAMBA (SpAtial, Motor and Bodily Awareness) Research Group, Psychology Department, University of Turin, Turin, Italy.

(E+) is a specific contralesional delusion of body ownership, observed following brain damage, in which patients embody someone else's arm and its movements within their own body schema whenever the contralesional 'alien' arm is presented in a body-congruent position (i.e., 1st person perspective and aligned with the patient's shoulder). Read More

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http://dx.doi.org/10.3389/fpsyg.2018.02726DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6339900PMC
January 2019
1 Read

Rehabilitation of unilateral spatial neglect: A combined behavioral and fMRI single-case study.

Neuropsychology 2019 Jan 28. Epub 2019 Jan 28.

Department of Medicine and Surgery, University of Parma.

Objective: Symptoms of visuospatial neglect occur frequently after unilateral brain damage. Neglect hampers general rehabilitation progress and is associated with reduced quality of life. Some of the rehabilitation programs developed to treat neglect have demonstrated behavioral improvements. Read More

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http://doi.apa.org/getdoi.cfm?doi=10.1037/neu0000523
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http://dx.doi.org/10.1037/neu0000523DOI Listing
January 2019
7 Reads

Mental time travel and functional daily life activities in neglect patients: Recovery effects of rehabilitation by prism adaptation.

Cortex 2018 Dec 14;113:141-155. Epub 2018 Dec 14.

Istituti Clinici Scientifici Maugeri IRCCS, Pavia, Italy; Department of Psychology, University of Bologna, Bologna, Italy.

Recent neuropsychological evidence put forward impaired ability in processing particular aspects of time, such as Mental Time Travel (MTT), in brain damaged patients exhibiting a deficit of spatial attention (i.e., neglect) and the possibility to recover this MTT deficit through a manipulation of spatial attention by prism adaptation (PA). Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00109452183041
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http://dx.doi.org/10.1016/j.cortex.2018.12.003DOI Listing
December 2018
8 Reads

Long-term effects of institutional rearing, foster care, and brain activity on memory and executive functioning.

Proc Natl Acad Sci U S A 2019 Jan 14;116(5):1808-1813. Epub 2019 Jan 14.

Laboratories of Cognitive Neuroscience, Boston Children's Hospital and Harvard Medical School, Boston, MA 02215.

Children experiencing psychosocial deprivation as a result of early institutional rearing demonstrate many difficulties with memory and executive functioning (EF). To date, there is scant evidence that foster care placement remediates these difficulties during childhood. The current study examined longitudinal trajectories of memory and EF from childhood to adolescence in the Bucharest Early Intervention Project, a randomized controlled trial of foster care for institutionally reared children. Read More

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http://www.pnas.org/lookup/doi/10.1073/pnas.1809145116
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http://dx.doi.org/10.1073/pnas.1809145116DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6358707PMC
January 2019
5 Reads

Correlation between changes in functional connectivity in the dorsal attention network and the after-effects induced by prism adaptation in healthy humans: A dataset of resting-state fMRI and pointing after prism adaptation.

Data Brief 2019 Feb 18;22:583-589. Epub 2018 Dec 18.

Department of Rehabilitation Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.

It has been reported that it is possible to observe transient changes in resting-state functional connectivity (FC) in the attention networks of healthy adults during treatment with prism adaptation. by using functional magnetic resonance imaging (fMRI) (see "Prism adaptation changes resting-state functional connectivity in the dorsal stream of visual attention networks in healthy adults: A fMRI study" (Tsujimoto et al., 2018) [1]. Read More

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http://dx.doi.org/10.1016/j.dib.2018.12.053DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6322076PMC
February 2019
1 Read

Visual search pattern during free viewing of horizontally flipped images in patients with unilateral spatial neglect.

Cortex 2018 Dec 14;113:83-95. Epub 2018 Dec 14.

Department of Rehabilitation for the Movement Functions, Research Institute, National Rehabilitation Center for Persons with Disabilities, Saitama, Japan; Neurorehabilitation Research Center, Kio University, Nara, Japan. Electronic address:

Eye tracking is an effective tool for identifying behavioural aspects of unilateral spatial neglect (USN), which is a common neurological syndrome that develops after a right hemisphere lesion. Here, we attempted to elucidate how the neglect symptom affects the symmetry of the gaze pattern, by performing an analysis of gaze distribution during the free viewing of a pair of horizontally flipped images. Based on their Behavioural Inattention Test (BIT) scores, 41 patients with right-hemisphere damage were classified into those with USN (n = 27) and those without USN (right hemisphere damaged - RHD; n = 14). Read More

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http://dx.doi.org/10.1016/j.cortex.2018.11.029DOI Listing
December 2018
2 Reads

The Neuropsychology of Feature Binding and Conscious Perception.

Authors:
Barbara Treccani

Front Psychol 2018 21;9:2606. Epub 2018 Dec 21.

Department of Psychology and Cognitive Science, University of Trento, Trento, Italy.

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http://dx.doi.org/10.3389/fpsyg.2018.02606DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6308126PMC
December 2018
1 Read

Effect of Combined Therapy of Robot and Low-Frequency Repetitive Transcranial Magnetic Stimulation on Hemispatial Neglect in Stroke Patients.

Ann Rehabil Med 2018 Dec 28;42(6):788-797. Epub 2018 Dec 28.

Department of Physical Medicine and Rehabilitation, Dong-A University College of Medicine, Busan, Korea.

Objective: To investigate the effect of upper limb rehabilitation combining robot with low-frequency repetitive transcranial magnetic stimulation (rTMS) on unilateral spatial neglect in stroke patients.

Methods: Patients who had hemispatial neglect after right hemisphere stroke were randomly divided into rTMS only group, robot only group, and combined group. All groups received conventional neglect therapy and additional treatment for each group. Read More

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http://dx.doi.org/10.5535/arm.2018.42.6.788DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6325312PMC
December 2018
1 Read

Judgement bias testing in group-housed gestating sows.

Behav Processes 2019 Feb 2;159:86-92. Epub 2019 Jan 2.

Department of Clinical Studies, University of Pennsylvania School of Veterinary Medicine, 382 W Street Road, Kennett Square, PA, 19348, USA.

Societal concerns about animal welfare have triggered the movement of gestating sows from individual stalls to group housing in many countries. Common methods of assessing sow welfare focus on overt physical ailments, and potentially neglect psychological stressors. A judgement bias task may allow researchers to evaluate an animal's subjective mental or affective state to provide a more comprehensive welfare assessment. Read More

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http://dx.doi.org/10.1016/j.beproc.2018.12.021DOI Listing
February 2019
1 Read

Contribution of transcranial magnetic stimulation in assessing parietofrontal connectivity during gesture production in healthy individuals and brain-injured patients.

Neurophysiol Clin 2018 Dec 29. Epub 2018 Dec 29.

Inserm U1171, University Lille, Degenerative and Vascular Cognitive Disorders, 59000 Lille, France; Department of Clinical Neurophysiology, Lille University Medical Center, 59000 Lille, France.

Parietofrontal (PF) networks link the posterior parietal cortex to premotor and prefrontal areas, and are involved in the control of many motor and cognitive behaviors in healthy humans. In recent years, electrophysiological experiments have provided a better understanding of the functional specificity and temporal involvement of the PF networks' different components during the planning of visually guided upper limb movements. In particular, transcranial magnetic stimulation has been used to temporarily inactivate a cortical area (virtual lesions) or to assess connectivity using paired-pulse protocols)). Read More

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http://dx.doi.org/10.1016/j.neucli.2018.12.005DOI Listing
December 2018
2 Reads

Impact of unilateral spatial neglect on chronic patient's post-stroke quality of life.

Somatosens Mot Res 2018 Dec 28:1-5. Epub 2018 Dec 28.

d Department of Applied Physical Therapy , Federal University of Triângulo Mineiro (UFTM) , Uberaba , Brazil.

Background: Unilateral spatial neglect (USN) is the prevalent feature in patients with right-sided stroke. It is diagnosed through the behavior inattention test (BIT) and has a negative impact on patients affecting both their functional capacity and quality of life.

Objective: Here, we aimed to evaluate the impact of USN on the quality of life of patients in the chronic phase of stroke. Read More

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http://dx.doi.org/10.1080/08990220.2018.1521791DOI Listing
December 2018
11 Reads

The elephant in the room? Why spatial stigma does not receive the public health attention it deserves.

J Public Health (Oxf) 2018 Dec 20. Epub 2018 Dec 20.

Division of Health Research, Faculty of Health and Medicine, Lancaster University, Lancaster, UK.

In the context of health inequalities, spatial stigma refers to the ways that areas experiencing socioeconomic inequalities become negatively portrayed and labelled in public, official and policy discourses. With respect to the body of research on social determinants of health and health inequalities, and attention accorded to this issue in policy or practice, spatial stigma remains significantly under-represented compared with other possible causal factors. We suggest three explanations contributing to this neglect. Read More

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http://dx.doi.org/10.1093/pubmed/fdy214DOI Listing
December 2018
1 Read

Re-fixation and perseveration patterns in neglect patients during free visual exploration.

Eur J Neurosci 2018 Dec 17. Epub 2018 Dec 17.

Gerontechnology & Rehabilitation Group, University of Bern, Bern, Switzerland.

The literature suggests that neglect patients not only show impairments in directing attention toward the left, contralesional space, but also present with perseverative behavior. Moreover, previous studies described re-fixations during visual search tasks, and interpreted this finding as an impairment of spatial working memory. The aim of the present study was to study re-fixations and perseverations (i. Read More

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http://doi.wiley.com/10.1111/ejn.14309
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http://dx.doi.org/10.1111/ejn.14309DOI Listing
December 2018
8 Reads
3.181 Impact Factor

Sensorimotor plasticity in response to predictable visual stimuli could correct the signs of spatial neglect.

Ann Phys Rehabil Med 2018 Dec 13. Epub 2018 Dec 13.

Neuroscience Department, Laboratory for Behavioral Neurology and Imaging of Cognition, University of Geneva, Geneva, Switzerland; Neurology Department, University Hospital of Geneva, Geneva, Switzerland.

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http://dx.doi.org/10.1016/j.rehab.2018.11.002DOI Listing
December 2018

Quantifying egocentric spatial neglect with cancellation tasks: A theoretical validation.

J Neuropsychol 2018 Dec 14. Epub 2018 Dec 14.

Department of Brain and Cognition, KU Leuven, Belgium.

Spatial neglect is characterized by a spatial bias in response to stimuli. The disorder is often assessed with a cancellation task, where several measures can be used to quantify the spatial bias of cancellation responses (e.g. Read More

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http://dx.doi.org/10.1111/jnp.12177DOI Listing
December 2018

Unilateral neglect post stroke: Eye movement frequencies indicate directional hypokinesia while fixation distributions suggest compensational mechanism.

Brain Behav 2019 Jan 12;9(1):e01170. Epub 2018 Dec 12.

Department of Psychology, University of Oslo, Oslo, Norway.

Introduction: Eye movements and spatial attention are closely related, and eye-tracking can provide valuable information in research on visual attention. We investigated the pathology of overt attention in right hemisphere (RH) stroke patients differing in their severity of neglect symptoms by using eye-tracking during a dynamic attention task.

Methods: Eye movements were recorded in 26 RH stroke patients (13 with and 13 without unilateral spatial neglect, and a matched group of 26 healthy controls during a Multiple Object Tracking task. Read More

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https://onlinelibrary.wiley.com/doi/abs/10.1002/brb3.1170
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http://dx.doi.org/10.1002/brb3.1170DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6346647PMC
January 2019
15 Reads

Assessment of Unilateral Spatial Neglect Using a Free Mobile Application for Italian Clinicians.

Front Psychol 2018 22;9:2241. Epub 2018 Nov 22.

Applied Technology for Neuro-Psychology Lab, Istituto Auxologico Italiano, Milan, Italy.

Unilateral Spatial Neglect (USN) is traditionally assessed with paper-and-pencil tests or computer-based tests. Thanks to the wide-spreading of mobile devices, and the extensive capabilities that they have in dealing complex elements, it is possible to provide clinicians with tools for cognitive assessment. Contemporary 3D engine is, in general generally, able to deploy complex 3D environments for iOS, Android and Windows mobile, i. Read More

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http://dx.doi.org/10.3389/fpsyg.2018.02241DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6262901PMC
November 2018
1 Read

Ventral attention and motor network connectivity is relevant to functional impairment in spatial neglect after right brain stroke.

Brain Cogn 2019 02 3;129:16-24. Epub 2018 Dec 3.

Kessler Foundation, 1199 Pleasant Valley Way, West Orange, NJ 07052, USA; Rutgers New Jersey Medical School, Newark, NJ 07102, USA. Electronic address:

Emerging research suggests spatial neglect after right stroke is linked to dysfunctional attention and motor networks. Advanced functional connectivity analysis clarified brain network recovery, however we need to know how networks participate in adaptive motor performance. We need to verify network changes associated with validated functional measures and spatial-motor performance in spatial neglect, especially in patients with large brain lesions and significant disability. Read More

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http://dx.doi.org/10.1016/j.bandc.2018.11.013DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6377801PMC
February 2019
3 Reads

Meta-analysis of the visuospatial aftereffects of prism adaptation, with two novel experiments.

Cortex 2019 Feb 19;111:256-273. Epub 2018 Nov 19.

Clinical Neuropsychology, Department of Clinical Neurosciences, Western General Hospital, NHS Lothian, Edinburgh, UK.

We present a meta-analysis of the effects of visuomotor adaptation to leftward displacing prisms on visuospatial judgements in healthy people, as assessed by perceptual (landmark) and manual versions of the line bisection task. To supplement previously published datasets, we report two novel experiments: Experiment 1 (n = 12) found null effects of adaptation to 10° leftward prisms on spatial bias in the landmark task, and Experiment 2 (n = 24) found null effects of 12° leftward prisms on spatial bias in a computerised line bisection task. Including these data, we considered 17 experiments for the landmark task (total n = 256), and 12 experiments for line bisection (total n = 172), in which participants were adapted for between 7 and 20 min to prism strengths from 8 to 17°. Read More

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http://dx.doi.org/10.1016/j.cortex.2018.11.013DOI Listing
February 2019
2 Reads

Neglect dyslexia as a word-centred impairment: A single case study.

Cortex 2018 Nov 10. Epub 2018 Nov 10.

Department of Experimental Psychology, University of Oxford, Oxford, UK.

Neglect Dyslexia is a neuropsychological syndrome in which patients commit consistently lateralised letter omission, addition, and substitution errors when reading individual words. Although neglect dyslexia frequently co-occurs with domain-general visuospatial neglect, some cases of neglect dyslexia may be best characterised as a dissociable impairment within a word-centred reference frame. This investigation employs data from a single case study of a patient who demonstrated word-centred neglect dyslexia to clarify neglect dyslexia's relationship with visuospatial neglect. Read More

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http://dx.doi.org/10.1016/j.cortex.2018.10.024DOI Listing
November 2018
2 Reads

Prisms for timing better: A review on application of prism adaptation on temporal domain.

Cortex 2018 Nov 1. Epub 2018 Nov 1.

Istituti Clinici Scientifici Maugeri, Hospital IRCCS, Castel Goffredo, Italy; Department of Psychology, University of Bologna, Bologna, Italy. Electronic address:

The possibility to induce a transient modulation of visuo-spatial attention boosted so far the implementation of the prism adaptation in a variety of domains. This sensorimotor technique has been adopted to investigate the neural plasticity in neurologically healthy individuals, as well as to ameliorate deficit of visuo-spatial attention (which characterizes neglect patients' performance). We review here evidence about a new promising application of prisms in exploring how the human brain represents the subjective time flow on a spatially oriented "mental time line". Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00109452183035
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http://dx.doi.org/10.1016/j.cortex.2018.10.017DOI Listing
November 2018
5 Reads

Exploring prism exposure after hemispheric damage: Reduced aftereffects following left-sided lesions.

Cortex 2018 Nov 1. Epub 2018 Nov 1.

Neuropsychological Laboratory, S. Luca Hospital, IRCCS Istituto Auxologico Italiano, Milano, Italy; Department of Psychology, University of Milano-Bicocca, Milano, Italy. Electronic address:

Prism adaptation is a well-known method used to investigate brain plasticity, and a promising technique for the rehabilitation of unilateral spatial neglect (USN). Only little evidence about the mechanisms of prism adaptation (PA) in patients with left-brain damage is on record, and about putative differences of PA, and the aftereffects (AEs), between patients with left and right brain damage. In the present study, PA and the AEs were assessed in 30 brain-damaged patients, 20 with right-sided lesions (10 with and 10 without USN), and 10 with left-sided lesions without USN, as well as in a control group of 24 age-matched participants. Read More

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http://dx.doi.org/10.1016/j.cortex.2018.10.014DOI Listing
November 2018
1 Read

Altered time judgements highlight common mechanisms of time and space perception.

Cogn Neuropsychol 2018 Dec 29;35(8):458-470. Epub 2018 Nov 29.

a Neuropsychology Unit, Department of Neurology , University Hospital Zurich , Zürich , Switzerland.

Space, numbers and time share similar processing mechanisms mediated by parietal cortex. In parallel to the spatial representation of numbers along a horizontal line, temporal information is mapped on a horizontal axis with short intervals (and the past) represented to the left of long intervals (and the future). Little is known about the representation of time in the presence of visuo-spatial deficits. Read More

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http://dx.doi.org/10.1080/02643294.2018.1549027DOI Listing
December 2018
7 Reads

The Influence of Focused and Sustained Spatial Attention on the Allocation of Spatial Attention.

J Int Neuropsychol Soc 2019 Jan 29;25(1):65-71. Epub 2018 Nov 29.

1Brain Rehabilitation Research Center, Malcom Randall VA Medical Center,Gainesville, FL.

Objective: The objective of this study was to evaluate the impact of directed and sustained attention on the allocation of visuospatial attention. Healthy people often have left lateral and upward vertical spatial attentional biases. However, it is not known whether there will be an increase in bias toward the attended portion of the stimulus when volitional spatial attention is allocated to a portion of a stimulus, whether there are asymmetrical spatial alterations of these biases, and how sustained attention influences these biases. Read More

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http://dx.doi.org/10.1017/S1355617718000802DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6349482PMC
January 2019
1 Read

Further to the right: Viewing distance modulates attentional asymmetries ('pseudoneglect') during visual exploration.

Brain Cogn 2019 02 22;129:40-48. Epub 2018 Nov 22.

Perception and Eye Movement Laboratory, Departments of Neurology and BioMedical Research, University Hospital, University of Bern, Switzerland.

Previous studies showed that the small leftward bias found in healthy humans' spatial judgments of lines ("pseudoneglect") shifts to the right with increasing distance between stimuli and observer. In this study, we investigated whether such a modulation of attentional asymmetry can also be observed in free visual exploration. Participants freely explored photographs of naturalistic scenes for 7 s in near (60 cm) and far (140 cm) space. Read More

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http://dx.doi.org/10.1016/j.bandc.2018.11.008DOI Listing
February 2019
11 Reads
2.477 Impact Factor

Prism adaptation changes resting-state functional connectivity in the dorsal stream of visual attention networks in healthy adults: A fMRI study.

Cortex 2018 Oct 31. Epub 2018 Oct 31.

Department of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, Japan.

Unilateral spatial neglect (USN) can be defined as a failure to orient to contra-lesional stimuli in the absence of either sensory or motor defects. Although the behavioral and clinical effects of prism adaptation (PA) are widely accepted, its underlying mechanisms are still controversial. However, recent neuroimaging and neurophysiological studies support the idea that PA affects the visual attention and sensorimotor networks including in the parietal cortex and cerebellum. Read More

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http://dx.doi.org/10.1016/j.cortex.2018.10.018DOI Listing
October 2018
7 Reads

Patients' experiences of unilateral spatial neglect between stroke onset and discharge from inpatient rehabilitation: a thematic analysis of qualitative interviews.

Disabil Rehabil 2018 Nov 22:1-10. Epub 2018 Nov 22.

g Department of Health Sciences and Technology, Institute of Human Movement Sciences and Sport , ETH Zurich , Zurich , Switzerland.

Purpose: The purpose of this qualitative study was to explore how stroke patients with unilateral spatial neglect experience; (a) performance in activities of daily living; (b) alterations in bodily perceptions; and (c) personal hopes and expectations, looking at the period between stroke onset and discharge from inpatient rehabilitation.

Materials And Methods: We conducted individual semi-structured interviews with 7 (5 men, 2 women, mean age 69 years) consecutively sampled participants. All interviews were transcribed verbatim and analyzed using thematic analysis. Read More

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http://dx.doi.org/10.1080/09638288.2018.1531150DOI Listing
November 2018
11 Reads

Energy Deposition by Energetic Electrons in a Diffusive Collisional Transport Model.

Astrophys J 2018 2;862(2). Epub 2018 Aug 2.

School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, Scotland, UK.

A considerable fraction of the energy in a solar flare is released as suprathermal electrons; such electrons play a major role in energy deposition in the ambient atmosphere, and hence the atmospheric response to flare heating. Historically, the transport of these particles has been approximated through a deterministic approach in which first-order secular energy loss to electrons in the ambient target is treated as the dominant effect, with second-order diffusive terms (in both energy and angle) being generally either treated as a small correction or neglected. However, it has recently been pointed out that while neglect of diffusion in energy may indeed be negligible, diffusion in angle is of the same order as deterministic scattering and hence must be included. Read More

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http://dx.doi.org/10.3847/1538-4357/aaceaaDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6237098PMC
August 2018
1 Read

Rehabilitation in chronic spatial neglect strengthens resting-state connectivity.

Acta Neurol Scand 2019 Mar 3;139(3):254-259. Epub 2018 Dec 3.

Department of Pharmacology and Clinical Neuroscience, Umeå University, Umeå, Sweden.

Objectives: Rehabilitation of patients with chronic visuospatial neglect is underexplored, and little is known about neural mechanisms that can be exploited to promote recovery. In this study, we present data on resting-state functional connectivity within the dorsal attention network (DAN) in chronic neglect patients as they underwent training in a virtual reality (VR) environment that improved left-side awareness.

Methods: The study included 13 patients with visuospatial neglect persisting more than six months after a right-sided stroke. Read More

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http://doi.wiley.com/10.1111/ane.13048
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http://dx.doi.org/10.1111/ane.13048DOI Listing
March 2019
16 Reads

Multiple object tracking and pupillometry reveal deficits in both selective and intensive attention in unilateral spatial neglect.

J Clin Exp Neuropsychol 2019 Apr 14;41(3):270-289. Epub 2018 Nov 14.

b Department of Psychology , University of Oslo , Oslo , Norway.

Introduction: Unilateral spatial neglect is typically associated with a spatial attention deficit, as neglect patients fail to respond to objects in their contralesional hemispace. However, growing evidence suggests that also nonspatial attention impairments (e.g. Read More

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http://dx.doi.org/10.1080/13803395.2018.1536735DOI Listing
April 2019
1 Read

Pushing attention to one side: Force field adaptation alters neural correlates of orienting and disengagement of spatial attention.

Eur J Neurosci 2019 Jan 1;49(1):120-136. Epub 2018 Dec 1.

Centre for Sensorimotor Performance, School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Queensland, Australia.

Sensorimotor adaptation to wedge prisms can alter the balance of attention between left and right space in healthy adults, and improve symptoms of spatial neglect after stroke. Here we asked whether the orienting of spatial attention to visual stimuli is affected by a different form of sensorimotor adaptation that involves physical perturbations of arm movement, rather than distortion of visual feedback. Healthy participants performed a cued discrimination task before and after they made reaching movements to a central target. Read More

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http://dx.doi.org/10.1111/ejn.14266DOI Listing
January 2019
3 Reads

Impact of unilateral spatial neglect with or without other cognitive impairments on independent gait recovery in stroke survivors.

J Rehabil Med 2019 01;51(1):26-31

Department of Rehabilitation, Tokyo Shinjuku Medical Center, Japan Community Health care Organization, Tokyo, Japan.

Objective: To investigate the impact of unilateral spatial neglect with or without other cognitive impairments on recovery of independent gait in stroke survivors.

Design: A prospective cohort study.

Subjects: Ninety-four stroke survivors in an inpatient rehabilitation ward. Read More

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https://www.medicaljournals.se/jrm/content/abstract/10.2340/
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http://dx.doi.org/10.2340/16501977-2503DOI Listing
January 2019
11 Reads

Poststroke Delirium Clinical Motor Subtypes: The PRospective Observational POLIsh Study (PROPOLIS).

J Neuropsychiatry Clin Neurosci 2018 Nov 8:appineuropsych18040073. Epub 2018 Nov 8.

From the Department of Neurology, School of Medicine, Jagiellonian University, Krakow, Poland (PP, KK, EK, AW, AS-M, TD, AK-M).

Although delirium is the most common neurobehavioral complication after stroke, its motor subtypes-hypoactive, hyperactive, mixed, and none-as well as their risk factors are not well characterized. Motor subtypes influence recognition and prognosis of delirium in hospitalized patients. The aim of this prospective study was to assess the frequency of poststroke delirium subtypes and to describe their predictive models. Read More

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https://psychiatryonline.org/doi/10.1176/appi.neuropsych.180
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http://dx.doi.org/10.1176/appi.neuropsych.18040073DOI Listing
November 2018
11 Reads

Value-driven attentional capture in neglect.

Cortex 2018 Dec 5;109:260-271. Epub 2018 Oct 5.

Neuroscience Department, Laboratory for Behavioral Neurology and Imaging of Cognition, University of Geneva, Geneva, Switzerland.

Objective: Recent studies suggest that motivational cues such as rewards may be a powerful determinant of attentional selection, both in healthy subjects and in brain-damaged patients suffering from neglect. However, the exact brain mechanisms underlying these effects and their relation to other well-known attentional systems are still poorly known.

Methods: We designed a visual search paradigm to examine how value-based attentional priority could modulate spatial orienting in patients with pathological biases due to neglect after right hemispheric stroke. Read More

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http://dx.doi.org/10.1016/j.cortex.2018.09.015DOI Listing
December 2018
2 Reads

Vision of the upper limb fails to compensate for kinesthetic impairments in subacute stroke.

Cortex 2018 Dec 11;109:245-259. Epub 2018 Oct 11.

Hotchkiss Brain Institute, University of Calgary, Calgary, Alberta, Canada; Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada. Electronic address:

Kinesthesia is an essential component of proprioception allowing for perception of movement. Due to neural injury, such as stroke, kinesthesia can be significantly impaired. Throughout neurorehabilitation, clinicians may encourage use of vision to guide limb movement to retrain impaired kinesthesia. Read More

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https://linkinghub.elsevier.com/retrieve/pii/S00109452183032
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http://dx.doi.org/10.1016/j.cortex.2018.09.022DOI Listing
December 2018
11 Reads

Left hemispatial neglect with a splenial lesion.

Neurocase 2018 Aug 28;24(4):220-226. Epub 2018 Oct 28.

d Neurology Service and GRECC , Malcom Randall Veterans Affairs Medical Center , Gainesville , FL , USA.

With injury of the anterior two-thirds of the corpus callosum, each hemisphere's attentional bias to contralateral hemispace becomes manifest with each hand deviating ipsilaterally during line bisection tasks. Patients with infarctions in the right posterior cerebral artery distribution with occipital and splenial damage can also exhibit spatial neglect. The goal of this report is to learn the role of the splenium of the corpus callosum in mediating visuospatial attention. Read More

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https://www.tandfonline.com/doi/full/10.1080/13554794.2018.1
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http://dx.doi.org/10.1080/13554794.2018.1539501DOI Listing
August 2018
27 Reads

The effect of theta-burst stimulation on unilateral spatial neglect following stroke: a systematic review.

Clin Rehabil 2018 Oct 29:269215518804018. Epub 2018 Oct 29.

1 Parkwood Institute Research, Lawson Health Research Institute, Parkwood Institute, London, ON, Canada.

Objective:: To evaluate the effectiveness of theta-burst stimulation for the treatment of stroke-induced unilateral spatial neglect.

Data Sources:: A systematic literature search was conducted from the inception of each database to 30 June 2018 using CINAHL, EMBASE, PubMed, PsycINFO, and Scopus.

Review Methods:: Articles were included if theta-burst stimulation was used to treat neglect following a stroke. Read More

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http://dx.doi.org/10.1177/0269215518804018DOI Listing
October 2018
7 Reads

A critical review of the role of impaired spatial remapping processes in spatial neglect.

Clin Neuropsychol 2018 Oct 25:1-23. Epub 2018 Oct 25.

a Department of Neurosciences , University of Geneva , Geneva , Switzerland.

Objective: Unilateral spatial neglect is a multi-faceted syndrome that arises from brain lesions, typically in the right hemisphere, and is characterized by the failure to attend or respond to stimuli in contralesional space. Here, we expand on the proposal that one deficit contributing to the diverse symptoms in neglect involves spatial remapping processes. Spatial remapping is required to maintain a stable visual representation despite frequent eye movements that change the retinal image. Read More

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http://dx.doi.org/10.1080/13854046.2018.1503722DOI Listing
October 2018
9 Reads

Transcranial Magnetic Stimulation as an Intervention Tool to Recover from Language, Swallowing and Attentional Deficits after Stroke: A Systematic Review.

Cerebrovasc Dis 2018 19;46(3-4):178-185. Epub 2018 Oct 19.

Coimbra Institute for Biomedical Imaging and Translational Research/Institute of Nuclear Sciences Applied to Health (CIBIT/ICNAS), University of Coimbra, Coimbra,

Background: Following a stroke event, patients often are severely affected by disabilities that hinder their quality-of-life. There are currently several rehabilitative options and strategies, and it is crucial to find the most effective interventions. The applicability of transcranial magnetic stimulation (TMS) to the recovery of nonmotor functions such as communication skills, swallowing ability and spatial attention after stroke remains important clinical questions. Read More

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http://dx.doi.org/10.1159/000494213DOI Listing
October 2018
5 Reads

Simulated driving: The added value of dynamic testing in the assessment of visuo-spatial neglect after stroke.

J Neuropsychol 2018 Oct 16. Epub 2018 Oct 16.

Center of Excellence for Rehabilitation Medicine, Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University and De Hoogstraat Rehabilitation, The Netherlands.

Background: Visuo-spatial neglect (VSN) is generally assessed with neuropsychological paper-and-pencil tasks, which are often not sensitive enough to detect mild and/or well-compensated VSN. It is of utmost importance to develop dynamic tasks, resembling the dynamics of daily living.

Objective: A simulated driving task was used to assess (1) differences in performance (i. Read More

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http://dx.doi.org/10.1111/jnp.12172DOI Listing
October 2018
5 Reads