Open AccessBetween-object action coupling influences visual selection: Neuropsychological evidence
Author(s) -
Jane Riddoch,
Glyn W. Humphreys
Publication year - 2010
Publication title -
journal of vision
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.126
H-Index - 113
ISSN - 1534-7362
DOI - 10.1167/2.7.277
Subject(s) - stimulus (psychology) , psychology , extinction (optical mineralogy) , cognitive psychology , neuroscience , action selection , action (physics) , communication , perception , physics , optics , quantum mechanics
Visual extinction, associated with unilateral parietal damage, occurs when a patient can report a single unilateral stimulus but fails to report the same stimulus under bilateral presentation conditions. Prior studies have shwn that extinction can be reduced if bilateral stimuli group to form parts of a single object. In this study we demonstrate that extinction can also be reduced in parietal patients when separate objects fall in appropriate spatial relations for action. We failed to find similar reductions in extinction when stimuli were associatively but not action-related, and we failed to find effects of action relations when words rather than objects were presented to patients. The evidence suggests that action coupling can be used to 'glue' objects together for visual selection