Document Detail

Prism adaptation moves neglect-related perseveration to contralesional space.
MedLine Citation:
PMID:  19057176     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Hemi-neglect is a disorder characterized by a disregard of contralesional stimuli. Some neglect patients also show an "exaggerated attention" for the ipsilesional field, reflected in perseverative responses, such as repetitive fixations in the ipsilesional field, ipsilesional revisitings on standard cancellation, or exaggerations in drawings on the ipsilesional side. OBJECTIVE AND METHOD: It is still unclear whether neglect and perseveration are due to a single underlying mechanism. In the present study, we will examine the effect of 4-day-in-a-row prism adaptation on neglect and perseveration severity in a patient with severe perseverations. Additionally, we will examine whether the position of omissions and perseverations on the Star Cancellation will change during the intervention. RESULTS: Our patient showed a decrease in neglect severity and an increase in perseveration severity, suggesting that perseveration and neglect are dissociated phenomena. Interestingly, 4-day-in-a-row prism adaptation gradually moved the predominant position of perseverative responses from right to left as neglect decreased with treatment. CONCLUSIONS: Perseverative responses do not necessarily occur in the ipsilesional sector of space as is generally assumed. Instead, the position of the revisits may be determined by the severity of the neglect, and may shift when the focus of attention moves more contralesionally with recovery.
Gudrun M S Nys; Ruth Seurinck; H Chris Dijkerman
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Publication Detail:
Type:  Case Reports; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Cognitive and behavioral neurology : official journal of the Society for Behavioral and Cognitive Neurology     Volume:  21     ISSN:  1543-3641     ISO Abbreviation:  Cogn Behav Neurol     Publication Date:  2008 Dec 
Date Detail:
Created Date:  2008-12-05     Completed Date:  2009-03-05     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101167278     Medline TA:  Cogn Behav Neurol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  249-53     Citation Subset:  IM    
Laboratory for Neuropsychology, Department of Neurology, Ghent University, Belgium.
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MeSH Terms
Adaptation, Physiological / physiology*
Aged, 80 and over
Functional Laterality / physiology*
Memory / physiology
Memory, Short-Term / physiology
Neuropsychological Tests
Perceptual Disorders / psychology*
Psychomotor Performance / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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