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Unwanted reflex-like saccades in visual extinction patients

Published online by Cambridge University Press:  01 August 1999

Alessandra Fanini  and
Carlo Alberto Marzi
Alessandra Fanini
Affiliation:
Dipartimento di Scienze Neurologiche e della Visione, Sezione di Fisiologia Umana, 37134 Verona, Italy{alpha; marzic}@borgoroma.univr.it
Carlo Alberto Marzi
Affiliation:
Dipartimento di Scienze Neurologiche e della Visione, Sezione di Fisiologia Umana, 37134 Verona, Italy{alpha; marzic}@borgoroma.univr.it
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Abstract

We studied patients with left visual extinction following right hemisphere damage in a simple manual reaction time task using brief visual stimuli. With unilateral lateralized stimuli the patients showed a high proportion of unwanted, reflex-like saccades to either side of stimulation. In contrast, with bilateral stimuli there was an overall decrease in the proportion of unwanted saccades, and the vast majority of them were directed toward the ipsilesional side. The implications of these results for the Findlay & Walker model are discussed.

Type
Open Peer Commentary
Information
Behavioral and Brain Sciences , Volume 22 , Issue 4 , August 1999 , pp. 683
Copyright
© 1999 Cambridge University Press

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