Neuropsychological evidence for a competitive bias against contracting stimuli.

Kevin Dent, Glyn Humphreys

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Two experiments examined extinction to stimuli presented either with contracting or expanding motion. Experiment 1 used solid shapes which either increased or decreased in size rapidly, consistent with looming motion. Experiment 2 employed random dots so that stimulus size was not confounded with type of motion. In both experiments extinction was modulated by the type of motion presented, with extinction most evident when a contracting object was in the weaker visual field. In addition, in Experiment 2 there was evidence for grouping modulating extinction, when there were looming stimuli in both fields. The results suggest that looming motion is a powerful determinant of stimulus salience in selective attention.
Original languageEnglish
Pages (from-to)1-10
Number of pages10
JournalNeurocase
DOIs
Publication statusPublished - 1 Sep 2010

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