Oculoparalytic illusion: Visual-field dependent spatial mislocalizations by humans partially paralyzed with curare

Leonard Matin, Evan Picoult, John K. Stevens, McIver W. Edwards, David Young, Rodger David MacArthur

Research output: Contribution to journalArticle

134 Scopus citations


In darkness, observers partially paralyzed with curare make large (> 20 degrees) gaze- and dosage-dependent errors in visually localizing eye-level-horizontal and median planes, in matching the location of a sound to a light, and in pointing at a light. In illuminated, structured visual fields visual localization and pointing are accurate but errors in auditory-to-visual matches remain. Defects in extraretinal eye position information are responsible for all errors. The influence of extraretinal eye position information on visual localization is suppressed by a structured visual field but is crucial both in darkness and for intersensory localization if visual capture is prevented.

Original languageEnglish (US)
Pages (from-to)198-201
Number of pages4
Issue number4542
Publication statusPublished - Jan 1 1982
Externally publishedYes


ASJC Scopus subject areas

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