61 results match your criteria perceptual memory-related


Object recognition and visual object agnosia.

Handb Clin Neurol 2021 ;178:155-173

Department of Psychology, University of Copenhagen, Copenhagen, Denmark.

The term visual agnosia is used to refer to recognition disorders that are confined to the visual modality, that are not due to an impairment in sensory functions, and that cannot be explained by other cognitive deficits or by general reduction in intellectual ability. Here, we describe the different types of visual agnosia that have been reported (form agnosia, integrative agnosia, associative agnosia, transformational and orientation agnosia as well as category-specific impairments such as pure alexia and prosopagnosia) and how they relate to the current understanding of visual object recognition. Together with related disorders such as simultanagnosia, texture agnosia, aphantasia, and optic aphasia, these visual perceptual impairments can have severe consequences for those affected. Read More

View Article and Full-Text PDF
January 2021

Time Distortion in Parkinsonism.

Front Neurosci 2021 19;15:648814. Epub 2021 Mar 19.

Department of Neurology, The Jikei University Katsushika Medical Center, Tokyo, Japan.

Although animal studies and studies on Parkinson's disease (PD) suggest that dopamine deficiency slows the pace of the internal clock, which is corrected by dopaminergic medication, timing deficits in parkinsonism remain to be characterized with diverse findings. Here we studied patients with PD and progressive supranuclear palsy (PSP), 3-4 h after drug intake, and normal age-matched subjects. We contrasted perceptual (temporal bisection, duration comparison) and motor timing tasks (time production/reproduction) in supra- and sub-second time domains, and automatic versus cognitive/short-term memory-related tasks. Read More

View Article and Full-Text PDF

Sensory- and memory-related drivers for altered ventriloquism effects and aftereffects in older adults.

Cortex 2021 Feb 17;135:298-310. Epub 2020 Dec 17.

Department for Cognitive Neuroscience, Faculty of Biology, Bielefeld University, Bielefeld, Germany; Center for Cognitive Interaction Technology (CITEC), Bielefeld University, Bielefeld, Germany. Electronic address:

The manner in which humans exploit multisensory information for subsequent decisions changes with age. Multiple causes for such age-effects are being discussed, including a reduced precision in peripheral sensory representations, changes in cognitive inference about causal relations between sensory cues, and a decline in memory contributing to altered sequential patterns of multisensory behaviour. To dissociate these putative contributions, we investigated how healthy young and older adults integrate audio-visual spatial information within trials (the ventriloquism effect) and between trials (the ventriloquism aftereffect). Read More

View Article and Full-Text PDF
February 2021

Robust spatial ventriloquism effect and trial-by-trial aftereffect under memory interference.

Sci Rep 2020 11 30;10(1):20826. Epub 2020 Nov 30.

Department for Cognitive Neuroscience, Faculty of Biology, Bielefeld University, Universitätsstr. 25, 33615, Bielefeld, Germany.

Our brain adapts to discrepancies in the sensory inputs. One example is provided by the ventriloquism effect, experienced when the sight and sound of an object are displaced. Here the discrepant multisensory stimuli not only result in a biased localization of the sound, but also recalibrate the perception of subsequent unisensory acoustic information in the so-called ventriloquism aftereffect. Read More

View Article and Full-Text PDF
November 2020

Progression from Feature-Specific Brain Activity to Hippocampal Binding during Episodic Encoding.

J Neurosci 2020 02 11;40(8):1701-1709. Epub 2019 Dec 11.

Department of Psychology, Boston College, Chestnut Hill, Massachusetts 02467.

The hallmark of episodic memory is recollecting multiple perceptual details tied to a specific spatial-temporal context. To remember an event, it is therefore necessary to integrate such details into a coherent representation during initial encoding. Here we tested how the brain encodes and binds multiple, distinct kinds of features in parallel, and how this process evolves over time during the event itself. Read More

View Article and Full-Text PDF
February 2020

Memory-related perceptual illusions directly affect physical activity in humans.

PLoS One 2019 16;14(5):e0216988. Epub 2019 May 16.

Health, Medical and Neuropsychology, Leiden University, Leiden, The Netherlands.

Perceptual illusions help us understand deficits in human perception, but they also have the potential to serve as treatment methods; e.g., to alleviate phantom limb pain. Read More

View Article and Full-Text PDF
February 2020

Refixation control in free viewing: a specialized mechanism divulged by eye-movement-related brain activity.

J Neurophysiol 2018 11 15;120(5):2311-2324. Epub 2018 Aug 15.

Laboratory for Perceptual Dynamics, Brain and Cognition Research Unit, KU Leuven - University of Leuven , Leuven , Belgium.

In free viewing, the eyes return to previously visited locations rather frequently, even though the attentional and memory-related processes controlling eye-movement show a strong antirefixation bias. To overcome this bias, a special refixation triggering mechanism may have to be recruited. We probed the neural evidence for such a mechanism by combining eye tracking with EEG recording. Read More

View Article and Full-Text PDF
November 2018

Post-decision biases reveal a self-consistency principle in perceptual inference.

Elife 2018 05 15;7. Epub 2018 May 15.

Department of Psychology, University of Pennsylvania, Philadelphia, United States.

Making a categorical judgment can systematically bias our subsequent perception of the world. We show that these biases are well explained by a whose perceptual inference process is causally conditioned on the preceding choice. We quantitatively validated the model and its key assumptions with a targeted set of three psychophysical experiments, focusing on a task sequence where subjects first had to make a categorical orientation judgment before estimating the actual orientation of a visual stimulus. Read More

View Article and Full-Text PDF

The central locus of self-prioritisation.

Q J Exp Psychol (Hove) 2019 May 5;72(5):1068-1083. Epub 2018 Jun 5.

3 University of Bath, Bath, UK.

Self-related information is under many circumstances processed in a preferred and biased way, leading to what has been termed the self-prioritisation effect (SPE). The SPE has been demonstrated with arbitrary stimuli assigned to self and others, thereby controlling the influence of familiarity, and originally been attributed to facilitated perceptual processing of self-related stimuli. Subsequent studies, however, casted doubts on this interpretation and suggested further possible sources for the SPE. Read More

View Article and Full-Text PDF

Influence of encoding instructions and response bias on cross-cultural differences in specific recognition.

Cult Brain 2017 Oct 24;5(2):153-168. Epub 2017 Oct 24.

Brandeis University, 415 South St., MS 062, Waltham, MA 02453, USA.

Prior cross-cultural research has reported cultural variations in memory. One study revealed that Americans remembered images with more perceptual detail than East Asians (Millar et al. in Cult Brain 1(2-4):138-157, 2013). Read More

View Article and Full-Text PDF
October 2017

Evaluating the relationship between white matter integrity, cognition, and varieties of video game learning.

Restor Neurol Neurosci 2017 ;35(5):437-456

University of Texas at Dallas, Richardson, TX, USA.

Background: Many studies are currently researching the effects of video games, particularly in the domain of cognitive training. Great variability exists among video games however, and few studies have attempted to compare different types of video games. Little is known, for instance, about the cognitive processes or brain structures that underlie learning of different genres of video games. Read More

View Article and Full-Text PDF

What You See Is What You Remember: Visual Chunking by Temporal Integration Enhances Working Memory.

J Cogn Neurosci 2017 Dec 4;29(12):2025-2036. Epub 2017 Aug 4.

University of Groningen.

Human memory benefits from information clustering, which can be accomplished by chunking. Chunking typically relies on expertise and strategy, and it is unknown whether perceptual clustering over time, through temporal integration, can also enhance working memory. The current study examined the attentional and working memory costs of temporal integration of successive target stimulus pairs embedded in rapid serial visual presentation. Read More

View Article and Full-Text PDF
December 2017

Behavioural and neural evidence for the impact of fluency context on conscious memory.

Cortex 2017 07 21;92:271-288. Epub 2017 Apr 21.

Department of Psychology, Saarland University, Saarbrücken, Germany. Electronic address:

It has been recently suggested that fluency may impact recognition memory performance when the fluency context varies from trial-to-trial. Surprisingly, such an effect has proved difficult to detect in the masked priming paradigm, one of the most popular means to increase fluency-based memory judgements. We conducted a functional magnetic resonance imaging (fMRI) experiment in which participants encoded words at study and, at test, performed a recognition memory task within a masked priming procedure. Read More

View Article and Full-Text PDF

Atypical Endocannabinoid Signaling Initiates a New Form of Memory-Related Plasticity at a Cortical Input to Hippocampus.

Cereb Cortex 2018 07;28(7):2253-2266

Department of Anatomy and Neurobiology, University of California, Irvine, CA, USA.

Endocannabinoids (ECBs) depress transmitter release at sites throughout the brain. Here, we describe another form of ECB signaling that triggers a novel form of long-term potentiation (LTP) localized to the lateral perforant path (LPP) which conveys semantic information from cortex to hippocampus. Two cannabinoid CB1 receptor (CB1R) signaling cascades were identified in hippocampus. Read More

View Article and Full-Text PDF

Manipulating Bodily Presence Affects Cross-Modal Spatial Attention: A Virtual-Reality-Based ERP Study.

Front Hum Neurosci 2017 22;11:79. Epub 2017 Feb 22.

Department of Psychology, Liverpool Hope University Liverpool, UK.

Earlier studies have revealed cross-modal visuo-tactile interactions in endogenous spatial attention. The current research used event-related potentials (ERPs) and virtual reality (VR) to identify how the visual cues of the perceiver's body affect visuo-tactile interaction in endogenous spatial attention and at what point in time the effect takes place. A bimodal oddball task with lateralized tactile and visual stimuli was presented in two VR conditions, one with and one without visible hands, and one VR-free control with hands in view. Read More

View Article and Full-Text PDF
February 2017

Measuring cognitive complaints in breast cancer survivors: psychometric properties of the patient's assessment of own functioning inventory.

Support Care Cancer 2016 12 19;24(12):4939-4949. Epub 2016 Jul 19.

UCLA Jonsson Comprehensive Cancer Center, 650 Charles Young Drive South, Room A2-125 CHS, Los Angeles, CA, 90095-6900, USA.

Purpose: Cognitive complaints are a concern for breast cancer survivors. Among various published measures for cognitive complaints, the Patient's Assessment of Own Functioning Inventory (PAOFI) is one of the few assessing a spectrum of cognitive abilities, including those most commonly reported by breast cancer survivors. This study aimed to examine the psychometric properties of the PAOFI in breast cancer survivors. Read More

View Article and Full-Text PDF
December 2016

Associative hallucinations result from stimulating left ventromedial temporal cortex.

Cortex 2016 10 26;83:139-44. Epub 2016 Jul 26.

Center for the Neural Basis of Cognition, Pittsburgh, PA, USA; Program in Neural Computation, Carnegie Mellon University, Pittsburgh, PA, USA; Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA.

Visual recognition requires connecting perceptual information with contextual information and existing knowledge. The ventromedial temporal cortex (VTC), including the medial fusiform, has been linked with object recognition, paired associate learning, contextual processing, and episodic memory, suggesting that this area may be critical in connecting visual processing, context, knowledge and experience. However, evidence for the link between associative processing, episodic memory, and visual recognition in VTC is currently lacking. Read More

View Article and Full-Text PDF
October 2016

A State Space Model for Spatial Updating of Remembered Visual Targets during Eye Movements.

Front Syst Neurosci 2016 12;10:39. Epub 2016 May 12.

York Center for Vision Research, Canadian Action and Perception Network, York UniversityToronto, ON, Canada; Departments of Psychology, Biology, and Kinesiology and Health Sciences, York UniversityToronto, ON, Canada.

In the oculomotor system, spatial updating is the ability to aim a saccade toward a remembered visual target position despite intervening eye movements. Although this has been the subject of extensive experimental investigation, there is still no unifying theoretical framework to explain the neural mechanism for this phenomenon, and how it influences visual signals in the brain. Here, we propose a unified state-space model (SSM) to account for the dynamics of spatial updating during two types of eye movement; saccades and smooth pursuit. Read More

View Article and Full-Text PDF

Recent advances in understanding emotion-driven temporal distortions.

Authors:
Jessica I Lake

Curr Opin Behav Sci 2016 Apr;8:214-219

Department of Psychology, University of California, Los Angeles, CA 90095, USA.

Emotions are powerful drivers of distortions in time perception. Recent work continues to support arousal and attentional mechanisms of emotion-driven temporal distortions. A possible memory-related mechanism and various modulatory factors, such as age, gender, and psychopathology, have also been implicated in such distortions. Read More

View Article and Full-Text PDF

Fornix and medial temporal lobe lesions lead to comparable deficits in complex visual perception.

Neurosci Lett 2016 05 16;620:27-32. Epub 2016 Mar 16.

Department of Neuropsychology, Institute of Cognitive Neuroscience, Ruhr University Bochum, Bochum, Germany. Electronic address:

Recent research dealing with the structures of the medial temporal lobe (MTL) has shifted away from exclusively investigating memory-related processes and has repeatedly incorporated the investigation of complex visual perception. Several studies have demonstrated that higher level visual tasks can recruit structures like the hippocampus and perirhinal cortex in order to successfully perform complex visual discriminations, leading to a perceptual-mnemonic or representational view of the medial temporal lobe. The current study employed a complex visual discrimination paradigm in two patients suffering from brain lesions with differing locations and origin. Read More

View Article and Full-Text PDF

Effects of memory strategy training on performance and event-related brain potentials of children with ADHD in an episodic memory task.

Neuropsychol Rehabil 2016 Oct 7;26(5-6):910-41. Epub 2015 Aug 7.

a Faculty of Psychology and Neuroscience, Department of Cognitive Neuroscience , Maastricht University , Maastricht , The Netherlands.

Evidence for memory problems in children with attention deficit hyperactivity disorder (ADHD) is accumulating. Attempting to counter such problems, in the present study children with ADHD aged 8-12 years underwent a six-week metacognitive memory strategy training (MST) or one of two other active trainings, either a metacognitive attention-perceptual-motor training (APM) or placebo training consisting of playing board games (PLA). Effects of the training on episodic memory and underlying brain processes were investigated by comparing performance and event-related brain potentials (ERPs) on pre- and post-training sessions in an old/new recognition task between the three training groups. Read More

View Article and Full-Text PDF
October 2016

Hand position influences perceptual grouping.

Exp Brain Res 2015 Sep 31;233(9):2627-34. Epub 2015 May 31.

Department of Psychology, University of Toronto, Toronto, ON, Canada,

Over the past decade, evidence has accumulated that performance in attention, perception, and memory-related tasks are influenced by the distance between the hands and the stimuli (i.e., placing the observer's hands near or far from the stimuli). Read More

View Article and Full-Text PDF
September 2015

Rapid influences of cued visual memories on attentional guidance.

Ann N Y Acad Sci 2015 Mar 26;1339:1-10. Epub 2014 Nov 26.

Department of Cognitive Psychology, VU University Amsterdam, Amsterdam, the Netherlands.

There is evidence that the deployment of attention can be biased by the content of visual working memory. Recently, it has been shown that focusing internal attention to a specific item in memory not only increases the accessibility of that specific item for retrieval, but also results in increased attentional guidance toward matching external stimuli by that item. Here, we investigated the time course of attentional guidance by cued memories. Read More

View Article and Full-Text PDF

Amplitude spectrum EEG signal evidence for the dissociation of motor and perceptual spatial working memory in the human brain.

Exp Brain Res 2014 Feb 27;232(2):659-73. Epub 2013 Nov 27.

Cognition and Action Group, Neurology Department, Aeginition Hospital, National and Kapodistrian University of Athens, Athens, Greece,

This study investigated the question whether spatial working memory related to movement plans (motor working memory) and spatial working memory related to spatial attention and perceptual processes (perceptual spatial working memory) share the same neurophysiological substrate or there is evidence for separate motor and perceptual working memory streams of processing. Towards this aim, ten healthy human subjects performed delayed responses to visual targets presented at different spatial locations. Two tasks were attained, one in which the spatial location of the target was the goal for a pointing movement and one in which the spatial location of the target was used for a perceptual (yes or no) change detection. Read More

View Article and Full-Text PDF
February 2014

The role of memory-related gene WWC1 (KIBRA) in lifetime posttraumatic stress disorder: evidence from two independent samples from African conflict regions.

Biol Psychiatry 2013 Nov 10;74(9):664-71. Epub 2013 Apr 10.

Clinical and Biological Psychology, Institute for Psychology and Education, University of Ulm, Ulm, Germany. Electronic address:

Background: Posttraumatic stress disorder (PTSD) results from the formation of a strong memory for the sensory-perceptual and affective representations of traumatic experiences, which is detached from the corresponding autobiographical context information. Because WWC1, the gene encoding protein KIBRA, is associated with long-term memory performance, we hypothesized that common WWC1 alleles influence the risk for a lifetime diagnosis of PTSD.

Methods: Traumatic load and diagnosis of current and lifetime PTSD were assessed in two independent African samples of survivors from conflict zones who had faced severe trauma (n = 392, Rwanda, and n = 399, Northern Uganda, respectively). Read More

View Article and Full-Text PDF
November 2013

Categorization = decision making + generalization.

Neurosci Biobehav Rev 2013 Aug 30;37(7):1187-200. Epub 2013 Mar 30.

Department of Psychology, Colorado State University Fort Collins, CO 80523, USA.

We rarely, if ever, repeatedly encounter exactly the same situation. This makes generalization crucial for real world decision making. We argue that categorization, the study of generalizable representations, is a type of decision making, and that categorization learning research would benefit from approaches developed to study the neuroscience of decision making. Read More

View Article and Full-Text PDF

Interference with episodic memory retrieval following transcranial stimulation of the inferior but not the superior parietal lobule.

Neuropsychologia 2013 Apr 4;51(5):900-6. Epub 2013 Feb 4.

Department of Neuroscience and Imaging, Gabriele d'Annunzio University, Chieti 66013, Italy.

Although posterior parietal cortex (PPC) has been traditionally associated with spatial attention and sensorimotor functions, recent neuroimaging evidence has suggested the involvement of regions of left PCC (LPPC) in memory retrieval. Yet, the role of the parietal lobe in memory-related functions is still controversial. Here we investigated the causal involvement of different LPPC regions in episodic memory retrieval using repetitive transcranial magnetic stimulation (rTMS) during a task that provided both objective and subjective measures of item recognition and source memory. Read More

View Article and Full-Text PDF

Electrophysiological distinctions between recognition memory with and without awareness.

Neuropsychologia 2013 Mar 31;51(4):642-55. Epub 2012 Dec 31.

Department of Neurology, Vanderbilt University, Nashville TN, USA.

The influence of implicit memory representations on explicit recognition may help to explain cases of accurate recognition decisions made with high uncertainty. During a recognition task, implicit memory may enhance the fluency of a test item, biasing decision processes to endorse it as "old". This model may help explain recognition-without-identification, a remarkable phenomenon in which participants make highly accurate recognition decisions despite the inability to identify the test item. Read More

View Article and Full-Text PDF

Towards an understanding of parietal mnemonic processes: some conceptual guideposts.

Authors:
Daniel A Levy

Front Integr Neurosci 2012 4;6:41. Epub 2012 Jul 4.

School of Psychology, The Interdisciplinary Center Herzliya, Israel.

The posterior parietal lobes have been implicated in a range of episodic memory retrieval tasks, but the nature of parietal contributions to remembering remains unclear. In an attempt to identify fruitful avenues of further research, several heuristic questions about parietal mnemonic activations are considered in light of recent empirical findings: Do such parietal activations reflect memory processes, or their contents? Do they precede, follow, or co-occur with retrieval? What can we learn from their pattern of lateralization? Do they index access to episodic representations, or the feeling of remembering? Are parietal activations graded by memory strength, quantity of retrieved information, or the type of retrieval? How do memory-related activations map onto functional parcellation of parietal lobes suggested by other cognitive phenomena? Consideration of these questions can promote understanding of the relationship between parietal mnemonic effects and perceptual, attentional, and action-oriented cognitive processes. Read More

View Article and Full-Text PDF
October 2012

Give it time: neural evidence for distorted time perception and enhanced memory encoding in emotional situations.

Neuroimage 2012 Oct 29;63(1):591-9. Epub 2012 Jun 29.

Department of Neurobiology, Weizmann Institute of Science, Rehovot 76100, Israel.

Time perception is compromised in emotional situations, yet our ability to remember these events is enhanced. Here we suggest how the two phenomena might be functionally linked and describe the neural networks that underlie this association. We found that participants perceived an emotionally aversive stimulus longer than it was, compared to an immediately following neutral stimulus. Read More

View Article and Full-Text PDF
October 2012