2,328 results match your criteria Spatial Neglect


A systematic review on spatial crime forecasting.

Crime Sci 2020 27;9(1). Epub 2020 May 27.

Doctoral College GIScience, Department of Geoinformatics-Z_GIS, University of Salzburg, Salzburg, Austria.

Background: Predictive policing and crime analytics with a spatiotemporal focus get increasing attention among a variety of scientific communities and are already being implemented as effective policing tools. The goal of this paper is to provide an overview and evaluation of the state of the art in spatial crime forecasting focusing on study design and technical aspects.

Methods: We follow the PRISMA guidelines for reporting this systematic literature review and we analyse 32 papers from 2000 to 2018 that were selected from 786 papers that entered the screening phase and a total of 193 papers that went through the eligibility phase. Read More

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http://dx.doi.org/10.1186/s40163-020-00116-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7319308PMC

Keeping an eye on visual search patterns in visuospatial neglect: A systematic review.

Neuropsychologia 2020 Jun 28:107547. Epub 2020 Jun 28.

Research School of Psychology, The Australian National University, Building 39, Science Road, Canberra, ACT, 2601, Australia.

Patients with visuospatial neglect exhibit a failure to detect, respond, or orient towards information located in the side of space opposite to their brain lesion. To extend our understanding of the underlying cognitive processes involved in neglect, some studies have used eye movement measurements to complement behavioural data. We provide a qualitative synthesis of studies that have used eye-tracking in patients with neglect, with a focus on highlighting the utility of examining eye movements and reporting what eye-tracking has revealed about visual search patterns in these patients. Read More

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http://dx.doi.org/10.1016/j.neuropsychologia.2020.107547DOI Listing

Behavioural and functional changes in neglect after multisensory stimulation.

Neuropsychol Rehabil 2020 Jun 30:1-28. Epub 2020 Jun 30.

Centre for Studies and Research in Cognitive Neuroscience, University of Bologna, Cesena, Italy.

The present cohort study investigated whether systematic multisensory audio-visual stimulation might improve clinical signs of neglect. To this aim, patients with neglect (= 7) and patients with neglect associated with hemianopia ( = 12) were exposed to a course of audio-visual stimulation with spatially and temporally coincident audio-visual pairs of stimuli for 10 daily training sessions (4 h of training per day), over two weeks. Performance on neuropsychological tests assessing neglect was measured before training, immediately after the training and months after the training at a follow-up session. Read More

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http://dx.doi.org/10.1080/09602011.2020.1786411DOI Listing

Improved stability of long-duration sitting in spatial neglect after a single session of prism adaptation.

Neurocase 2020 Jun 29:1-10. Epub 2020 Jun 29.

Department of Neurology, Emory School of Medicine , Atlanta, GA, USA.

Spatial neglect after right brain stroke affects balance, and improvements in sitting balance after prism adaptation have been demonstrated using short-duration center of pressure (CoP) data. We present long-duration (5 min) CoP and trunk muscles electromyography recordings of a 61-year-old man with left-sided spatial neglect, before and after a single session of prism adaptation. His CoP-derived measures showed improved balance and postural stability in both the anterior-posterior and medial-lateral directions after prism adaptation. Read More

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http://dx.doi.org/10.1080/13554794.2020.1786134DOI Listing

The ventral attention network: the mirror of the language network in the right brain hemisphere.

J Anat 2020 Jun 24. Epub 2020 Jun 24.

Department of Reanimation, Angers Teaching Hospital, Angers, France.

Resting-state functional MRI (RfMRI) analyses have identified two anatomically separable fronto-parietal attention networks in the human brain: a bilateral dorsal attention network and a right-lateralised ventral attention network (VAN). The VAN has been implicated in visuospatial cognition and, thus, potentially in the unilateral spatial neglect associated with right hemisphere lesions. Its parietal, frontal and temporal endpoints are thought to be structurally supported by undefined white matter tracts. Read More

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http://dx.doi.org/10.1111/joa.13223DOI Listing

Combining geospatial analyses to optimize quality reference values of rare earth elements in soils.

Environ Monit Assess 2020 Jun 24;192(7):453. Epub 2020 Jun 24.

Professor Emeritus, University of Guelph, Guelph, Ontario, Canada.

High pedological and geological variability can trigger the formation of REE hotspots, causing a need to optimize the establishment of quality reference values (QRVs). Thus, we determined the background concentrations of REEs in the soils of an emerging Brazilian state and used a combination of Moran's I and indicator kriging to identify REE hotspots and determine QRVs. A total of 100 composite soil samples was collected at a 0. Read More

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http://dx.doi.org/10.1007/s10661-020-08406-yDOI Listing

Child maltreatment data in the state of New Mexico across space and time.

Data Brief 2020 Aug 23;31:105759. Epub 2020 May 23.

New Mexico Community Data Collaborative 12401 Los Arboles Ave NE, Albuquerque, NM 87112, United States.

Child maltreatment is a serious public health problem. Previous research demonstrates that child maltreatment clusters in low-income, racially homogenous neighborhoods. Little is known, however, about the structural correlates of spatial risk in small areas such as census tracts. Read More

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http://dx.doi.org/10.1016/j.dib.2020.105759DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7300143PMC

Assessment of spatial neglect in clinical practice: A nationwide survey.

Neuropsychol Rehabil 2020 Jun 23:1-16. Epub 2020 Jun 23.

Department of Neurology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.

This study was part of a nationwide, anonymous, open Internet survey conducted amongst healthcare professionals in Denmark on the assessment and treatment of spatial neglect (SN). The objective was to describe knowledge and practices in the assessment of SN in current clinical practice across different healthcare sectors and professions. Data included the perceived prevalence, assessment methods and observations, subtypes and differential diagnostics of SN. Read More

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http://dx.doi.org/10.1080/09602011.2020.1778490DOI Listing

Following the gold trail: Reward influences on spatial exploration in neglect.

Cortex 2020 May 15;129:329-340. Epub 2020 May 15.

Institut des Sciences Cognitives Marc Jeannerod, UMR-5229, Centre National de La Recherche Scientifique, Université Claude Bernard Lyon, Lyon, France. Electronic address:

Spatial attention is guided by the perceived salience and relevance of objects in the environment, a process considered to depend on a broad parieto-frontal cortical network. Signals arising from the limbic and nigrostriatal pathways conveying affective and motivational cues are also known to modulate visual selection, but the nature of this contribution and its relation to spatial attention remain unclear. We investigated the role of reward information in 15 patients with left hemispatial neglect and 15 control subjects playing multiple rounds of a virtual foraging game. Read More

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http://dx.doi.org/10.1016/j.cortex.2020.04.027DOI Listing

Multisensory stimulation for the rehabilitation of unilateral spatial neglect.

Neuropsychol Rehabil 2020 Jun 19:1-34. Epub 2020 Jun 19.

Department of Psychology & Milan Center for Neuroscience - NeuroMi, University of Milano-Bicocca, Milan, Italy.

Unilateral spatial neglect (USN) is a neuropsychological syndrome, typically caused by lesions of the right hemisphere, whose features are the defective report of events occurring in the left (contralesional) side of space and the inability to orient and set up actions leftwards. Multisensory integration mechanisms, largely spared in USN patients, may temporally modulate spatial orienting. In this pilot study, the effects of an intensive audio-visual Multisensory Stimulation (MS) on USN were assessed, and compared with those of a treatment that ameliorates USN, Prismatic Adaptation (PA). Read More

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http://dx.doi.org/10.1080/09602011.2020.1779754DOI Listing

Immersive 3D Virtual Reality Cancellation Task for Visual Neglect Assessment: A Pilot Study.

Front Hum Neurosci 2020 25;14:180. Epub 2020 May 25.

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

: Unilateral spatial neglectis an attention disorder frequently occurring after a right-hemispheric stroke. Neglect results in a reduction in qualityof life and performance in activities of daily living. With current technical improvements in virtual reality (VR) technology, trainingwith stereoscopic head-mounted displays (HMD) has become a promising new approach for the assessment and the rehabilitation of neglect. Read More

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http://dx.doi.org/10.3389/fnhum.2020.00180DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7263018PMC
May 2020
2.895 Impact Factor

Attentional reorientation along the meridians of the visual field: Are there different neural mechanisms at play?

Hum Brain Mapp 2020 Jun 11. Epub 2020 Jun 11.

Cognitive Neuroscience, Institute of Neuroscience & Medicine (INM-3), Research Centre Juelich, Juelich, Germany.

Hemispatial neglect, after unilateral lesions to parietal brain areas, is characterized by an inability to respond to unexpected stimuli in contralesional space. As the visual field's horizontal meridian is most severely affected, the brain networks controlling visuospatial processes might be tuned explicitly to this axis. We investigated such a potential directional tuning in the dorsal and ventral frontoparietal attention networks, with a particular focus on attentional reorientation. Read More

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http://dx.doi.org/10.1002/hbm.25086DOI Listing

Development and proof of concept of immersive virtual reality system to evaluate near and far space neglect in individuals after stroke: A brief report.

NeuroRehabilitation 2020 May 30. Epub 2020 May 30.

Graduate School of Creative Science and Engineering, Waseda University, Tokyo, Japan.

Background: Unilateral spatial neglect (USN) is defined as impaired attention to sensory stimuli on one side. The symptoms can exist for near and far spaces combined or independently. Thus, it is important to evaluate both possibilities in a clinical environment. Read More

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http://dx.doi.org/10.3233/NRE-203014DOI Listing

Degenerative dementia with proximal radial and lower vertical spatial neglect.

Neurocase 2020 Jun 5:1-5. Epub 2020 Jun 5.

Geriatric Research, Education, and Clinical Center (GRECC), Malcom Randall VA Medical Center , Gainesville, FL, USA.

A 75 year-old man had a two-year history of progressive memory loss, trouble with finances and getting lost. On examination, he scored 16/30 in MoCA test, noticeably impaired on the attentional tasks. His screening bloodtests werenormal. Read More

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http://dx.doi.org/10.1080/13554794.2020.1769138DOI Listing

Clinical and functional differences between right and left stroke with and without contralateral spatial neglect.

J Rehabil Med 2020 Jun 12;52(6):jrm00072. Epub 2020 Jun 12.

Department of Rehabilitation and Brain Trauma, Turku University Hospital, PO Box 52, FI-20521 Turku, Finland. E-mail:

Objective: To examine the clinical and functional characteristics associated with contralateral spatial neglect in right compared with left subacute stroke, and to investigate the correlations between neglect severity and stroke severity, functional ability and outcome.

Methods: Cross-sectional study comparing neurological impairment and disability. The same data-set was used in part 2 of this study. Read More

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http://dx.doi.org/10.2340/16501977-2699DOI Listing

Comparison of functional recovery and outcome at discharge from subacute inpatient rehabilitation in patients with right or left stroke with and without contralateral spatial neglect.

J Rehabil Med 2020 Jun 12;52(6):jrm00071. Epub 2020 Jun 12.

Department of Rehabilitation and Brain Trauma, Turku University Hospital, PO Box 52, FI-20521 Turku, Finland. E-mail:

Objective: To compare to what extent the presence of contralateral spatial neglect affects functional recovery and outcome among patients with right or left stroke after subacute inpatient rehabilitation.

Methods: Observational cohort study comparing functional improvement and outcome. The same admission data-set was used as in part 1 of this study. Read More

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http://dx.doi.org/10.2340/16501977-2698DOI Listing

Predictors of Arm Nonuse in Chronic Stroke: A Preliminary Investigation.

Neurorehabil Neural Repair 2020 Jun 1;34(6):512-522. Epub 2020 Jun 1.

University of Southern California, Los Angeles, CA, USA.

. Nonuse (NU) after stroke is characterized by failure to use the contralesional arm despite adequate capacity. It has been suggested that NU is a consequence of the greater effort and/or attention required to use the affected limb, but such accounts have not been directly tested, and we have poor understanding of the predictors of NU. Read More

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http://dx.doi.org/10.1177/1545968320913554DOI Listing
June 2020
3.976 Impact Factor

Caloric Vestibular Stimulation Reduces the DirectionalBias in Representational Neglect.

Brain Sci 2020 May 26;10(6). Epub 2020 May 26.

Service de médecine physique et réadaptation, Hôpital Henry-Gabrielle, Hospices Civils de Lyon, 69610 Pierre-Bénite, France.

Caloric vestibular stimulation (CVS) can temporarily reduce visuospatial neglect and related symptoms. The present study examined the effect of CVS on representational neglect during free exploration of the map of France. We asked patients to name cities they could mentally "see" on the map of France, without giving them any directional instructions related to the left or right sides of the map. Read More

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http://dx.doi.org/10.3390/brainsci10060323DOI Listing

Comparing Bayesian spatial models: Goodness-of-smoothing criteria for assessing under- and over-smoothing.

PLoS One 2020 20;15(5):e0233019. Epub 2020 May 20.

ARC Centre of Excellence for Mathematical and Statistical Frontiers, Queensland University of Technology, Brisbane, Australia.

Background: Many methods of spatial smoothing have been developed, for both point data as well as areal data. In Bayesian spatial models, this is achieved by purposefully designed prior(s) or smoothing functions which smooth estimates towards a local or global mean. Smoothing is important for several reasons, not least of all because it increases predictive robustness and reduces uncertainty of the estimates. Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0233019PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7239453PMC

Visual working memory deficits following right brain damage.

Brain Cogn 2020 Jul 8;142:105566. Epub 2020 May 8.

Department of Psychology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.

Visual working memory (VWM) involves the encoding and maintenance of visual information over time, with the requirement that object features be accurately bound to spatial locations. We and others have shown that damage to the right hemisphere leads to impaired spatial working memory. Here, we test the notion that right brain damage (RBD) may have consequences for domain general VWM. Read More

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http://dx.doi.org/10.1016/j.bandc.2020.105566DOI Listing

Norm scores of cancelation and bisection tests for unilateral spatial neglect: data from a Brazilian population.

Clinics (Sao Paulo) 2020 8;75:e1468. Epub 2020 May 8.

Departamento de Neurologia, Psicologia e Psiquiatria, Faculdade de Medicina de Botucatu, Univesidade Paulita (UNESP), Botucatu, SP, BR.

Objective: Unilateral spatial neglect (USN) results in a consistent and exaggerated spatial asymmetry in the processing of information about the body or space due to an acquired brain injury. There are several USN tests for clinical diagnosis, but none of them are validated in Brazil. The aim was to obtain normative values from a healthy sample in Brazil and to evaluate the effects of demographic variables on USN tests. Read More

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http://dx.doi.org/10.6061/clinics/2019/e1468DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7196728PMC

The role of frontal and parietal cortex in the performance of gifted and average adolescents in a mental rotation task.

PLoS One 2020 13;15(5):e0232660. Epub 2020 May 13.

Department of Electrical and Biomedical Engineering, Institute of Technology, Federal University of Pará, Belém (PA), Brazil.

Visual-spatial abilities are usually neglected in academic settings, even though several studies have shown that their predictive power in science, technology, engineering, and mathematics domains exceeds that of math and verbal ability. This neglect means that many spatially talented youths are not identified and nurtured, at a great cost to society. In the present work, we aim to identify behavioral and electrophysiological markers associated with visual spatial-ability in intellectually gifted adolescents (N = 15) compared to age-matched controls (N = 15). Read More

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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0232660PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7219753PMC

Neuropsychological Changes in Complex Regional Pain Syndrome (CRPS).

Behav Neurol 2020 14;2020:4561831. Epub 2020 Jan 14.

Centre for Pain Research, University of Bath, Claverton Down Road, Bath BA2 7AY, UK.

Complex Regional Pain Syndrome (CRPS) is a poorly understood chronic pain condition of multifactorial origin. CRPS involves sensory, motor, and autonomic symptoms primarily affecting one extremity. Patients can also present with neuropsychological changes such as reduced attention to the CRPS-affected extremity, reminiscent of hemispatial neglect, yet in the absence of any brain lesions. Read More

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http://dx.doi.org/10.1155/2020/4561831DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7201816PMC
January 2020

Obtaining accurate and calibrated coil models for transcranial magnetic stimulation using magnetic field measurements.

Med Biol Eng Comput 2020 Jul 9;58(7):1499-1514. Epub 2020 May 9.

Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina.

Currently, simulations of the induced currents in the brain produced by transcranial magnetic stimulation (TMS) are used to elucidate the regions reached by stimuli. However, models commonly found in the literature are too general and neglect imperfections in the windings. Aiming to predict the stimulation sites in patients requires precise modeling of the electric field (E-field), and a proper calibration to adequate to the empirical data of the particular coil employed. Read More

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http://dx.doi.org/10.1007/s11517-020-02156-2DOI Listing

A new clinical evaluation of asomatognosia in right brain damaged patients using visual and reaching tasks.

J Clin Exp Neuropsychol 2020 Jul 7;42(5):436-449. Epub 2020 May 7.

Department of Psychology, University of Milano Bicocca , Milan, Italy.

Introduction: The term asomatognosia refers to a unilateral disturbance of body ownership following a cerebrovascular incident. Patients with asomatognosia consider the contralesional limbs as missing or having disappeared from awareness. This neuropsychological disorder modifies body ownership in terms of perceptual experience, visual identification and sense of belonging of contralesional body parts. Read More

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http://dx.doi.org/10.1080/13803395.2020.1757040DOI Listing

Visual Feedback Modulates Aftereffects and Electrophysiological Markers of Prism Adaptation.

Front Hum Neurosci 2020 17;14:138. Epub 2020 Apr 17.

Cognitive Health and Recovery Research Lab, Departments of Psychiatry, Psychology and Neuroscience, Brain Repair Centre, Dalhousie University, Halifax, NS, Canada.

Prism adaptation (PA) is both a model for visuomotor learning and a promising treatment for visuospatial neglect after stroke. The task involves reaching for targets while prism glasses horizontally displace the visual field. Adaptation is hypothesized to occur through two processes: strategic recalibration, a rapid self-correction of pointing errors; and spatial realignment, a more gradual adjustment of visuomotor reference frames that produce prism aftereffects (i. Read More

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http://dx.doi.org/10.3389/fnhum.2020.00138DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7182100PMC

Spin-Orbit Matrix Elements for a Combined Spin-Flip and IP/EA approach.

J Chem Theory Comput 2020 Jun 8;16(6):3597-3606. Epub 2020 May 8.

Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States.

We present a practical approach for computing the Breit-Pauli spin-orbit matrix elements of multiconfigurational systems with both spin and spatial degeneracies based on our recently developed RAS-SF-IP/EA method (Houck, S. E.; et al. Read More

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http://dx.doi.org/10.1021/acs.jctc.0c00103DOI Listing

On-Chip Neo-Glycopeptide Synthesis for Multivalent Glycan Presentation.

Chemistry 2020 Apr 21. Epub 2020 Apr 21.

Department of Biomolecular Systems, Max Planck Institute of Colloids and Interfaces, Am Muehlenberg 1, 14476, Potsdam, Germany.

Single glycan-protein interactions are often weak, such that glycan binding partners commonly utilize multiple, spatially defined binding sites to enhance binding avidity and specificity. Current array technologies usually neglect defined multivalent display. Laser-based array synthesis technology allows for flexible and rapid on-surface synthesis of different peptides. Read More

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http://dx.doi.org/10.1002/chem.202001291DOI Listing

Prism Adaptation Modulates Connectivity of the Intraparietal Sulcus with Multiple Brain Networks.

Cereb Cortex 2020 Apr 21. Epub 2020 Apr 21.

Behavioral Neurology Unit, National Institute of Neurological Disorders and Stroke Bethesda, MD 20892, USA.

Prism adaptation (PA) alters spatial cognition according to the direction of visual displacement by temporarily modifying sensorimotor mapping. Right-shifting prisms (right PA) improve neglect of left visual field in patients, possibly by decreasing activity in the left hemisphere and increasing it in the right. Left PA shifts attention rightward in healthy individuals by an opposite mechanism. Read More

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http://dx.doi.org/10.1093/cercor/bhaa032DOI Listing

Variability and stability in child maltreatment risk across time and space and its association with neighborhood social & housing vulnerability in New Mexico: A bayesian space-time model.

Child Abuse Negl 2020 Jun 7;104:104472. Epub 2020 Apr 7.

School of Public Affairs, University of Colorado Colorado Springs,1420 Austin Bluffs Parkway,Colorado Springs, CO 80919, United States. Electronic address:

Background: Modeling the spatio-temporal characteristics of substantiated child maltreatment risk has significant implications for child welfare policy.

Objective: This study quantifies the spatiotemporal risk of child abuse and neglect in New Mexico at the census tract level over 9 years, identifies areas of increased risk, and evaluates the role of multiple measures of social and housing insecurity on substantiated child maltreatment referrals.

Participants And Setting: Child maltreatment substantiation data across 499 census tracts from 2007 to 2015 were obtained from the New Mexico Department of Public Health. Read More

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http://dx.doi.org/10.1016/j.chiabu.2020.104472DOI Listing

Disputing space-based biases in unilateral complex regional pain syndrome.

Cortex 2020 Jun 13;127:248-268. Epub 2020 Mar 13.

Centre for Pain Research, University of Bath, Bath, UK; Department of Psychology, University of Bath, Bath, UK.

There is some evidence that people with Complex Regional Pain Syndrome (CRPS) show reduced attention to the affected relative to unaffected limb and its surrounding space, resembling hemispatial neglect after brain injury. These neuropsychological symptoms could be related to central mechanisms of pathological pain and contribute to its clinical manifestation. However, the existing evidence of changes in spatial cognition is limited and often inconsistent. Read More

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http://dx.doi.org/10.1016/j.cortex.2020.02.018DOI Listing

Non-Spatial Impairments Affect False-Positive Neglect Diagnosis Based on Cancellation Tasks.

J Int Neuropsychol Soc 2020 Mar 30:1-11. Epub 2020 Mar 30.

Department of Brain and Cognition, KU Leuven, Leuven, Belgium.

Objective: To diagnose egocentric neglect after stroke, the spatial bias of performance on cancellation tasks is typically compared to a single cutoff. This standard procedure relies on the assumption that the measurement error of cancellation performance does not depend on non-spatial impairments affecting the total number of cancelled targets. Here we assessed the impact of this assumption on false-positive diagnoses. Read More

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http://dx.doi.org/10.1017/S1355617720000041DOI Listing

Resting-state EEG topographies: Reliable and sensitive signatures of unilateral spatial neglect.

Neuroimage Clin 2020 Mar 5;26:102237. Epub 2020 Mar 5.

Institute of Bioengineering/Center for Neuroprosthetics, Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne, Switzerland; Department of Radiology and Medical Informatics, University of Geneva, Geneva, Switzerland.

Theoretical advances in the neurosciences are leading to the development of an increasing number of proposed interventions for the enhancement of functional recovery after brain damage. Integration of these novel approaches in clinical practice depends on the availability of reliable, simple, and sensitive biomarkers of impairment level and extent of recovery, to enable an informed clinical-decision process. However, the neuropsychological tests currently in use do not tap into the complex neural re-organization process that occurs after brain insult and its modulation by treatment. Read More

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http://dx.doi.org/10.1016/j.nicl.2020.102237DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7083886PMC

Successful return to professional work after neglect, extinction, and spatial misperception - Three long-term case studies.

Authors:
Georg Kerkhoff

Neuropsychol Rehabil 2020 Mar 20:1-26. Epub 2020 Mar 20.

Saarland University, Klinische Neuropsychologie & Neuropsychological Outpatient Unit, Saarbruecken, Germany.

Spatial neglect is a frequent, disabling syndrome and is associated with a poor rehabilitation outcome. Return to work seems almost impossible and has not been reported so far. Here, three cases with extensive right-hemisphere lesions after stroke are reported, who all showed residual left visuospatial neglect, left visual extinction on double simultaneous stimulation (DSS), and marked spatial-perceptual deficits. Read More

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http://dx.doi.org/10.1080/09602011.2020.1738248DOI Listing

Unbalancing the Attentional Priority Map Gaze-Contingent Displays Induces Neglect-Like Visual Exploration.

Front Hum Neurosci 2020 20;14:41. Epub 2020 Feb 20.

Department of Neurology, University of Lübeck, Lübeck, Germany.

Selective spatial attention is a crucial cognitive process that guides us to the behaviorally relevant objects in a complex visual world by using exploratory eye movements. The spatial location of objects, their (bottom-up) saliency and (top-down) relevance is assumed to be encoded in one "attentional priority map" in the brain, using different egocentric (eye-, head- and trunk-centered) spatial reference frames. In patients with hemispatial neglect, this map is supposed to be imbalanced, leading to a spatially biased exploration of the visual environment. Read More

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http://dx.doi.org/10.3389/fnhum.2020.00041DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7045871PMC
February 2020

A One-Year Follow-Up Study on Community Dwelling Multiple Stroke Survivors with Spatial Neglect.

Occup Ther Health Care 2020 Jan 10;34(1):48-61. Epub 2020 Mar 10.

Rehabilitation Medicine, University of Washington Medical Center, Seattle, WA.

This study assessed nine participants, who sustained multiple strokes and had spatial neglect, one year after participation in a prior trial on whether Prism Adaptation Treatment (PAT) was a feasible and effective treatment for spatial neglect remediation compared to standard care. The objectives were to: (1) describe the sample, (2) measure the degree of spatial neglect symptoms if present, and (3) determine group differences in motor and spatial performance. Three (60%) participants from the PAT group and two (50%) from the comparison group still displayed spatial neglect. Read More

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http://dx.doi.org/10.1080/07380577.2020.1737894DOI Listing
January 2020

[My Story of Recovery from Brain Damage].

Authors:
Keiko Seki

Brain Nerve 2020 Mar;72(3):203-213

Mitaka Research Institute of Cognitive Dysfunctions.

The author (hereafter referred to as I) is a speech-language-hearing pathologist and former professor of neuropsychology at Kobe University, who had been engaged in neuropsychological rehabilitation and research of conditions, such as aphasia and unilateral spatial neglect, for 37 years. In July 2009, I experienced right hemispheric infarction in Kobe City, and developed left-sided hemiparesis and various symptoms of cognitive dysfunctions, which was previously my field of expertise. As a neuropsychological rehabilitation expert, I focused my efforts on recovery and I have recovered the majority of my cognitive and neurologic functions. Read More

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http://dx.doi.org/10.11477/mf.1416201509DOI Listing

Spatiotemporal tracking of carbon emissions and uptake using time series analysis of Landsat data: A spatially explicit carbon bookkeeping model.

Sci Total Environ 2020 Jun 19;720:137409. Epub 2020 Feb 19.

Department of Earth & Environment, Boston University, 685 Commonwealth Avenue, Boston, MA 02215, USA. Electronic address:

Reducing terrestrial carbon emissions to the atmosphere requires accurate measuring, reporting and verification of land surface activities that emit or sequester carbon. Many carbon accounting practices in use today provide only regionally aggregated estimates and neglect the spatial variation of pre-disturbance forest conditions and post-disturbance land cover dynamics. Here, we present a spatially explicit carbon bookkeeping model that utilizes a high-resolution map of aboveground biomass and land cover dynamics derived from time series analysis of Landsat data. Read More

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http://dx.doi.org/10.1016/j.scitotenv.2020.137409DOI Listing

Value Neglect: A Critical Role for Ventromedial Frontal Lobe in Learning the Value of Spatial Locations.

Cereb Cortex 2020 May;30(6):3632-3643

Department of Neurology & Neurosurgery, McGill Univesity, Montreal, Quebec, Canada.

Whether you are a gazelle bounding to the richest tract of grassland or a return customer heading to the freshest farm stand at a crowded market, the ability to learn the value of spatial locations is important in adaptive behavior. The ventromedial frontal lobe (VMF) is implicated in value-based decisions between objects and in flexibly learning to choose between objects based on feedback. However, it is unclear if this region plays a material-general role in reward learning. Read More

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http://dx.doi.org/10.1093/cercor/bhz331DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7232996PMC

Upper Vertical Spatial Neglect With A Right Temporal Lobe Stroke.

Cogn Behav Neurol 2020 Mar;33(1):63-66

Division of Cognitive and Behavioral Neurology, Department of Neurology, University of Florida College of Medicine, Gainesville, Florida.

Individuals with a hemispheric infarction often reveal inattention to, or neglect of, contralesional lateral space (ie, hemispatial neglect). Individuals with a bilateral ventral temporal-occipital lesion have been shown to demonstrate upper vertical neglect, and those with a bilateral parietal-occipital lesion have been shown to demonstrate lower vertical neglect. However, to our knowledge, there have been no reports of individuals with vertical neglect from a unilateral hemispheric lesion. Read More

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http://dx.doi.org/10.1097/WNN.0000000000000221DOI Listing

Can auditory cues improve visuo-spatial neglect? Results of two pilot studies.

Neuropsychol Rehabil 2020 Feb 27:1-21. Epub 2020 Feb 27.

Department of Psychology, School of Medicine and Health Sciences, Carl von Ossietzky Universität Oldenburg, Oldenburg, Germany.

Although neglect is known to be a multimodal deficit, current interventions often address the visual modality only. Experimental studies, however, found that neglect patients can partially overcome their spatial inattention temporarily when being exposed to auditory cues that move towards the neglected side of space. Two pilot studies investigated the impact of dynamic auditory cueing on egocentric neglect severity in a clinical-therapeutic setting. Read More

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http://dx.doi.org/10.1080/09602011.2020.1727931DOI Listing
February 2020

Novel characterization of subjective visual vertical in patients with unilateral spatial neglect.

Neurosci Res 2020 Feb 19. Epub 2020 Feb 19.

Department of Physical Medicine and Rehabilitation, Kansai Medical University, 2-5-1 Shinmachi, Hirakata, Osaka 573-1010, Japan.

Visual vertical (VV), visually perceived direction of gravity, is widely measured to assess the vestibular function and visuospatial cognition. VV has been assessed by comparing orientation and variability of measured values separately between subject groups. However, changes in orientation and variability often differ in patients with unilateral spatial neglect (USN). Read More

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http://dx.doi.org/10.1016/j.neures.2020.02.005DOI Listing
February 2020

Transcranial electric stimulation optimizes the balance of visual attention across space.

Clin Neurophysiol 2020 Apr 31;131(4):912-920. Epub 2020 Jan 31.

Psychological Sciences Research Institute, Université catholique de Louvain, Belgium.

Objective: Transcranial direct current stimulation (tDCS) provides a way to modulate spatial attention by enhancing the ratio of neural activity between the left and right hemispheres, with a potential benefit for the rehabilitation of visual neglect.

Methods: We tested the effect of bilateral tDCS in healthy individuals performing a visual detection task. This protocol consists in the positioning of the anode and cathode on mirror positions over the left and right parietal areas. Read More

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http://dx.doi.org/10.1016/j.clinph.2019.12.415DOI Listing

Pain reduction by inducing sensory-motor adaptation in Complex Regional Pain Syndrome (CRPS PRISMA): protocol for a double-blind randomized controlled trial.

BMC Neurol 2020 Feb 19;20(1):62. Epub 2020 Feb 19.

Centre for Pain Research, University of Bath, Claverton Down Road, Bath, BA2 7AY, UK.

Background: Complex Regional Pain Syndrome (CRPS) presents as chronic, continuous pain and sensory, autonomic, and motor abnormalities affecting one or more extremities. People with CRPS can also show changes in their perception of and attention to the affected body part and sensory information in the affected side of space. Prism Adaptation (PA) is a behavioural intervention targeted at reducing attention deficits in post-stroke hemispatial neglect. Read More

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http://dx.doi.org/10.1186/s12883-020-1604-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7031894PMC
February 2020

Hybrid Network with Attention Mechanism for Detection and Location of Myocardial Infarction Based on 12-Lead Electrocardiogram Signals.

Sensors (Basel) 2020 Feb 14;20(4). Epub 2020 Feb 14.

Key Laboratory of Biotechnology Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400030, China.

The electrocardiogram (ECG) is a non-invasive, inexpensive, and effective tool for myocardial infarction (MI) diagnosis. Conventional detection algorithms require solid domain expertise and rely heavily on handcrafted features. Although previous works have studied deep learning methods for extracting features, these methods still neglect the relationships between different leads and the temporal characteristics of ECG signals. Read More

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http://dx.doi.org/10.3390/s20041020DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7071130PMC
February 2020

Effect of volume growth on the percolation threshold in random directed acyclic graphs with a given degree distribution.

Phys Rev E 2020 Jan;101(1-1):012303

Van 't Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, Netherlands.

In every network, a distance between a pair of nodes can be defined as the length of the shortest path connecting these nodes, and therefore one may speak of a ball, its volume, and how it grows as a function of the radius. Spatial networks tend to feature peculiar volume scaling functions, as well as other topological features, including clustering, degree-degree correlation, clique complexes, and heterogeneity. Here we investigate a nongeometric random graph with a given degree distribution and an additional constraint on the volume scaling function. Read More

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http://dx.doi.org/10.1103/PhysRevE.101.012303DOI Listing
January 2020

When Right Is on the Left (and Vice Versa): A Case Series of Glioma Patients with Reversed Lateralization of Cognitive Functions.

J Neurol Surg A Cent Eur Neurosurg 2020 Mar 17;81(2):138-146. Epub 2020 Feb 17.

Department of Neurosurgery, Elisabeth-Tweesteden Hospital, Tilburg, The Netherlands.

We report a case series of four patients operated on for a glioma in awake conditions and in whom task-based functional magnetic resonance imaging (fMRI) demonstrated right-dominant activity during a language production task. Language functional sites were identified intraoperatively by electrical stimulations only in the patient with a right-sided lesion. Furthermore, the pre- or postoperative cognitive evaluations in the three patients operated on for a left-sided glioma revealed right spatial neglect and dysexecutive syndrome, hence demonstrating that, in patients with right-dominant activity on language fMRI, the left hemisphere is implicated in spatial consciousness and cognitive control. Read More

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http://dx.doi.org/10.1055/s-0040-1701625DOI Listing

Early-life trauma endophenotypes and brain circuit-gene expression relationships in functional neurological (conversion) disorder.

Mol Psychiatry 2020 Feb 12. Epub 2020 Feb 12.

Functional Neurology Research Group, Departments of Neurology and Psychiatry, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.

Functional neurological (conversion) disorder (FND) is a neuropsychiatric condition whereby individuals present with sensorimotor symptoms incompatible with other neurological disorders. Early-life maltreatment (ELM) is a risk factor for developing FND, yet few studies have investigated brain network-trauma relationships in this population. In this neuroimaging-gene expression study, we used two graph theory approaches to elucidate ELM subtype effects on resting-state functional connectivity architecture in 30 patients with motor FND. Read More

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http://dx.doi.org/10.1038/s41380-020-0665-0DOI Listing
February 2020

Parietal Cortex Regulates Visual Salience and Salience-Driven Behavior.

Neuron 2020 Apr 10;106(1):177-187.e4. Epub 2020 Feb 10.

Department of Neurobiology and Howard Hughes Medical Institute, Stanford University School of Medicine, Stanford, CA 94305, USA. Electronic address:

Unique stimuli stand out. Despite an abundance of competing sensory stimuli, the detection of the most salient ones occurs without effort, and that detection contributes to the guidance of adaptive behavior. Neurons sensitive to the salience of visual stimuli are widespread throughout the primate visual system and are thought to shape the selection of visual targets. Read More

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http://dx.doi.org/10.1016/j.neuron.2020.01.016DOI Listing

Visual Exploration Area in Neglect: A New Analysis Method for Video-Oculography Data Based on Foveal Vision.

Front Neurosci 2019 22;13:1412. Epub 2020 Jan 22.

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

Video-oculography during free visual exploration (FVE) is a valuable tool to evaluate visual attention spatial allocation in neglect patients after right-hemispheric stroke. In conventional FVE analyses, the position of a visual fixation is conceived as a single point in space. Here, we describe a new complementary method to analyze FVE data based on foveal vision, leading to an accurate estimate of the portion of the picture that was effectively explored. Read More

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http://dx.doi.org/10.3389/fnins.2019.01412DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6987148PMC
January 2020