UNIGE document Scientific Article
previous document  unige:10092  next document
add to browser collection

Looking at human eyes affects contralesional stimulus processing after right hemispheric stroke

Maravita, A.
Posteraro, L.
Husain, M.
Driver, J.
Published in Neurology. 2007, vol. 69, no. 16, p. 1619-1621
Abstract Human eyes are a powerful social cue that may automatically attract the attention of an observer. Here we tested whether looking toward open human eyes, as often arises in standard clinical "confrontation" tests, may affect contralesional errors in a group of right brain-damaged patients showing visual extinction. Patients were requested to discriminate peripheral shape-targets presented on the left, right, or bilaterally. On each trial they also saw a central task-irrelevant stimulus, comprising an image of the eye sector of a human face, with those seen eyes open or closed. The conditions with central eye stimuli open (vs closed) induced more errors for contralesional peripheral targets, particularly for bilateral trials. These results suggest that seeing open eyes in central vision may attract attentional resources there, reducing attention to the periphery, particularly for the affected contralesional side. The seen gaze of the examiner may thus need to be considered during confrontation testing and may contribute to the effectiveness of that clinical procedure.
Keywords AgedAged, 80 and overAttention/physiologyCerebral Infarction/ physiopathology/psychologyDisability EvaluationEyeFaceFixation, Ocular/physiologyFunctional Laterality/physiologyHumansMiddle AgedNeurologic ExaminationNeuropsychological TestsPattern Recognition, Visual/physiologyPerceptual Disorders/diagnosis/etiology/ physiopathologyPhotic StimulationPredictive Value of Tests
PMID: 17938372
Full text
Article - public document Free access
(ISO format)
MARAVITA, A. et al. Looking at human eyes affects contralesional stimulus processing after right hemispheric stroke. In: Neurology, 2007, vol. 69, n° 16, p. 1619-1621. doi: 10.1212/01.wnl.0000277696.34724.76 https://archive-ouverte.unige.ch/unige:10092

388 hits



Deposited on : 2010-08-06

Export document
Format :
Citation style :