Elsevier

Neuropsychologia

Volume 30, Issue 11, November 1992, Pages 1017-1024
Neuropsychologia

Note
Defensive responses to looming visual stimuli in monkeys with unilateral striate cortex ablation

https://doi.org/10.1016/0028-3932(92)90053-OGet rights and content

Abstract

A number of residual visual functions including detection, localization and discrimination of visual stimuli, have been demonstrated in the “blind” fields of monkeys and human patients following damage to striate cortex. We report here that avoidance movements of the head can also be elicited from monkeys with unilateral striate cortex ablations when a “looming” stimulus is presented within the hemianopic and presumably “blind” field. The possible role of the retinofugal projection to superior colliculus in the mediation of these defensive head movements is discussed.

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