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Spatiotemporal properties of eye position signals in the primate central thalamus.

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Title: Spatiotemporal properties of eye position signals in the primate central thalamus.
Authors: Tanaka, Masaki Browse this author →KAKEN DB
Keywords: efference copy
neural integrator
single neurons
thalamocortical pathways
Issue Date: Jul-2007
Publisher: Oxford University Press
Journal Title: Cerebral Cortex
Volume: 17
Issue: 7
Start Page: 1504
End Page: 1515
Publisher DOI: 10.1093/cercor/bhl061
PMID: 16923780
Abstract: Although both sensory and motor signals in multiple cortical areas are modulated by eye position, the origin of eye position signals for cortical neurons remains uncertain. One likely source is the central thalamus which contains neurons sensitive to eye position. Since the central thalamus receives inputs from the brainstem, these neurons may transmit eye position signals arising from the neural integrator or from proprioceptive feedback. However, since the central thalamus also receives inputs from many cortical areas, eye position signals in the central thalamus could come from the cerebral cortex. To clarify these possibilities, spatial and temporal properties of eye position signals in the central thalamus were examined in trained monkeys. Data showed that eye position signals were decomposed into horizontal and vertical components, suggesting that the central thalamus lies within pathways that transmit brainstem eye position signals to the cortex. Further quantitative analyses suggested that two distinct groups of thalamic neurons mediate eye position signals from different subcortical origins, and that the signals are modified dynamically through ascending pathways. Eye position signals through the central thalamus may play essential roles in spatial transformation performed by cortical networks.
Rights: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Cerebral Cortex following peer review. The definitive publisher-authenticated version [Cerebral Cortex 2007 17(7):1504-1515] is available online at:
Type: article (author version)
Appears in Collections:医学院・医学研究院 (Graduate School of Medicine / Faculty of Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 田中 真樹

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