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Visual working memory deficits following right brain damage
- Source :
- Brain and cognition. 142
- Publication Year :
- 2019
-
Abstract
- 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. We had eight RBD patients and a group of healthy control participants perform a VWM task under different loads (1 to 3 items to recall) and spatial competition (high vs. low). All participants were asked to remember the colour of target items presented on the right side of space. Patients showed impaired encoding of information evident in poor precision of memory representations and increased guessing rates even at a set size of only one item. Our data suggests that VWM capacity is severely limited following RBD. Although five of the eight patients presented with neglect, it is not clear whether this deficit in VWM is unique to the syndrome. We suggest that future work should directly pit attention and VWM demands against one another in the same patients to determine whether the confluence of deficits in these domains is the critical determinant of the neglect syndrome. Regardless of the implications for the neglect syndrome, however, our data show that VWM deficits in RBD patients extend into non-spatial feature space.
- Subjects :
- Cognitive Neuroscience
media_common.quotation_subject
Experimental and Cognitive Psychology
Spatial memory
050105 experimental psychology
Lateralization of brain function
Neglect
Task (project management)
03 medical and health sciences
0302 clinical medicine
Arts and Humanities (miscellaneous)
Encoding (memory)
Developmental and Educational Psychology
Humans
0501 psychology and cognitive sciences
Attention
Set (psychology)
media_common
Cerebral Cortex
Memory Disorders
Recall
Working memory
05 social sciences
Neuropsychology and Physiological Psychology
Memory, Short-Term
Visual Perception
Psychology
030217 neurology & neurosurgery
Cognitive psychology
Subjects
Details
- ISSN :
- 10902147
- Volume :
- 142
- Database :
- OpenAIRE
- Journal :
- Brain and cognition
- Accession number :
- edsair.doi.dedup.....b12f6fa20ab97c596f9bb51bdab6080c