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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Eye movements and visuoverbal descriptions exhibit heterogeneous and dissociated patterns before and after prismatic adaptation in unilateral spatial neglect
European Journal of Neurology, Volume 13, No. 7, Year 2006
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Description
This prospective study examined the effects of prismatic adaptation on visual exploration strategies in patients with left unilateral spatial neglect (USN). Photo-oculographic gaze recordings were obtained, as the subjects (28 brain-damaged; 15 control) performed a free visual exploration task before and after a session of prismatic adaptation. (i) Before prismatic adaptation, the pattern of visual exploration described two subgroups of patients (symmetrical exploration of hemispaces - similar to the control subjects, deficient exploration of left hemispace). Twelve of 20 patients failed to describe significant elements in the left part of the displayed image. Several visuoverbal patterns were observed, some dissociating visual exploration and verbal description. (ii) Immediately after prismatic adaptation, patients with asymmetrical visual exploration presented a significant increase in the number of point fixations and saccades in the left hemispace. Patients with symmetrical exploration presented the opposite pattern. Improved pattern of visual exploration contrasted with an absence of improved verbal description. Eye movements and visuoverbal descriptions exhibit heterogeneous and dissociated patterns before and after prismatic adaptation. This results demonstrate that prismatic adaptation has no effect in certain patients, suggesting that therapeutic indications and evaluation of prismatic test results should take into consideration the heterogeneous nature of USN. © 2006 EFNS.
Authors & Co-Authors
Datié, Ange Michel
France, Nancy
Université de Lorraine
Cote D'ivoire, Abidjan
Teaching Hospital
Paysant, Jean
France, Nancy
Université de Lorraine
Destainville, S.
France, Nancy
Université de Lorraine
Sagez, A.
France, Nancy
Université de Lorraine
Beis, J. M.
France, Nancy
Université de Lorraine
André, Jean Marie
France, Nancy
Université de Lorraine
Statistics
Citations: 20
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1111/j.1468-1331.2006.01364.x
ISSN:
13515101
e-ISSN:
14681331
Research Areas
Health System And Policy
Violence And Injury
Study Design
Cohort Study