Document Detail

Improvement of left visuo-spatial hemineglect by left-sided transcutaneous electrical stimulation.
MedLine Citation:
PMID:  7731542     Owner:  NLM     Status:  MEDLINE    
The effects of transcutaneous electrical stimulation on left visuo-spatial hemineglect, assessed by a visuo-motor exploratory task (letter cancellation), were investigated in patients with right hemisphere lesions. In Experiment 1 left neck stimulation temporarily improved the deficit in 13 out of 14 patients (93%), while stimulation of the right neck had no positive effects, worsening exploratory performance in nine patients (64%). Experiment 2 showed that left neck stimulation temporarily improved neglect also when head movements were prevented by a chin-rest. In Experiment 3, stimulation of both the left hand and left neck had comparable positive effects on visuo-spatial hemineglect. These results are interpreted in terms of: (1) non-specific activation of the right hemisphere, contralateral to the stimulation side; (2) specific directional effects of left somatosensory stimulation on the egocentric co-ordinates of extra-personal space, which in neglect patients are distorted towards the side of the brain lesion.
G Vallar; M L Rusconi; S Barozzi; B Bernardini; D Ovadia; C Papagno; A Cesarani
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuropsychologia     Volume:  33     ISSN:  0028-3932     ISO Abbreviation:  Neuropsychologia     Publication Date:  1995 Jan 
Date Detail:
Created Date:  1995-05-30     Completed Date:  1995-05-30     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0020713     Medline TA:  Neuropsychologia     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  73-82     Citation Subset:  IM    
Dipartimento di Psicologia, Università di Roma, La Sapienza, Italy.
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MeSH Terms
Brain / physiopathology*
Functional Laterality*
Middle Aged
Space Perception*
Task Performance and Analysis
Transcutaneous Electric Nerve Stimulation*
Visual Fields*
Visual Perception*

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