Document Detail

Map-following skills in left and right brain-damaged patients with and without hemineglect.
MedLine Citation:
PMID:  23036103     Owner:  NLM     Status:  MEDLINE    
Map-following tasks require a "semantic interpretation" of the map, which could be affected by left brain damage, and "superimposition of the map upon the space," which could be compromised by right lesions and particularly by the presence of hemineglect. Participants followed a pathway depicted on a map of a real environment. The pathway included four left and four right turns. A legend explained the meaning of each symbol that appeared on the map. Our results showed no deficits in left brain-damaged patients, but poor performance in right brain-damaged patients affected by hemineglect. This deficit can be ascribed to their impaired egocentric frame of reference, but we cannot exclude a prevalent role of the right hemisphere in their use of the allocentric information on the map despite the presence of hemineglect. Indeed, three right brain-damaged patients without hemineglect showed a specific deficit in performing the task. We discuss the results in light of the possible impairment of the parietomedial temporal pathway, which supports spatial navigation and could be responsible for the patients' deficit.
Liana Palermo; Giulia Ranieri; Maddalena Boccia; Laura Piccardi; Federico Nemmi; Cecilia Guariglia
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Publication Detail:
Type:  Journal Article     Date:  2012-10-04
Journal Detail:
Title:  Journal of clinical and experimental neuropsychology     Volume:  34     ISSN:  1744-411X     ISO Abbreviation:  J Clin Exp Neuropsychol     Publication Date:  2012  
Date Detail:
Created Date:  2012-11-28     Completed Date:  2013-05-10     Revised Date:  2013-10-31    
Medline Journal Info:
Nlm Unique ID:  8502170     Medline TA:  J Clin Exp Neuropsychol     Country:  England    
Other Details:
Languages:  eng     Pagination:  1065-79     Citation Subset:  IM    
Dipartimento di Psicologia, Sapienza Università di Roma, Rome, Italy.
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MeSH Terms
Analysis of Variance
Attention / physiology
Brain Injuries / complications*
Brain Mapping*
Functional Laterality / physiology*
Image Processing, Computer-Assisted
Magnetic Resonance Imaging
Middle Aged
Neuropsychological Tests
Perceptual Disorders / etiology*
Psychomotor Performance / physiology*
Space Perception / physiology*
Young Adult

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