Short-Term Memory for Figure-Ground Organization in the Visual Cortex

Philip O'Herron, Rüdiger von der Heydt

Research output: Contribution to journalArticle

25 Scopus citations

Abstract

Whether the visual system uses a buffer to store image information and the duration of that storage have been debated intensely in recent psychophysical studies. The long phases of stable perception of reversible figures suggest a memory that persists for seconds. But persistence of similar duration has not been found in signals of the visual cortex. Here, we show that figure-ground signals in the visual cortex can persist for a second or more after the removal of the figure-ground cues. When new figure-ground information is presented, the signals adjust rapidly, but when a figure display is changed to an ambiguous edge display, the signals decay slowly-a behavior that is characteristic of memory devices. Figure-ground signals represent the layout of objects in a scene, and we propose that a short-term memory for object layout is important in providing continuity of perception in the rapid stream of images flooding our eyes.

Original languageEnglish (US)
Pages (from-to)801-809
Number of pages9
JournalNeuron
Volume61
Issue number5
DOIs
Publication statusPublished - Mar 12 2009
Externally publishedYes

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Keywords

  • SYSNEURO

ASJC Scopus subject areas

  • Neuroscience(all)

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