Dynamics of eye-position signals in the dorsal visual system

Adam P Morris, Michael Kubischik, Klaus-Peter Hoffmann, Bart Krekelberg, Frank Bremmer

Research output: Contribution to journalArticleResearchpeer-review

46 Citations (Scopus)

Abstract

BACKGROUND: Many visual areas of the primate brain contain signals related to the current position of the eyes in the orbit. These cortical eye-position signals are thought to underlie the transformation of retinal input-which changes with every eye movement-into a stable representation of visual space. For this coding scheme to work, such signals would need to be updated fast enough to keep up with the eye during normal exploratory behavior. We examined the dynamics of cortical eye-position signals in four dorsal visual areas of the macaque brain: the lateral and ventral intraparietal areas (LIP; VIP), the middle temporal area (MT), and the medial-superior temporal area (MST). We recorded extracellular activity of single neurons while the animal performed sequences of fixations and saccades in darkness. RESULTS: The data show that eye-position signals are updated predictively, such that the representation shifts in the direction of a saccade prior to (
Original languageEnglish
Pages (from-to)173 - 179
Number of pages7
JournalCurrent Biology
Volume22
Issue number3
DOIs
Publication statusPublished - 2012
Externally publishedYes

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