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The vestibular-related frontal cortex and its role in smooth-pursuit eye movements and vestibular-pursuit interactions.

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Title: The vestibular-related frontal cortex and its role in smooth-pursuit eye movements and vestibular-pursuit interactions.
Authors: Fukushima, Junko Browse this author →KAKEN DB
Akao, Teppei Browse this author
Kurkin, Sergei Browse this author →KAKEN DB
Kaneko R.S., Chris Browse this author
Fukushima, Kikuro Browse this author →KAKEN DB
Keywords: Smooth pursuit
gaze velocity
vestibulo-ocular reflex
semi-circular canal
frontal eye fields
supplementary eye fields
Issue Date: 2006
Publisher: IOS Press
Journal Title: Journal of Vestibular Research
Volume: 16
Issue: 1-2
Start Page: 1
End Page: 22
PMID: 16917164
Abstract: In order to see clearly when a target is moving slowly, primates with high acuity foveae use smooth-pursuit and vergence eye movements. The former rotates both eyes in the same direction to track target motion in frontal planes, while the latter rotates left and right eyes in opposite directions to track target motion in depth. Together, these two systems pursue targets precisely and maintain their images on the foveae of both eyes. During head movements, both systems must interact with the vestibular system to minimize slip of the retinal images. The primate frontal cortex contains two pursuit-related areas; the caudal part of the frontal eye fields (FEF) and supplementary eye fields (SEF). Evoked potential studies have demonstrated vestibular projections to both areas and pursuit neurons in both areas respond to vestibular stimulation. The majority of FEF pursuit neurons code parameters of pursuit such as pursuit and vergence eye velocity, gaze velocity, and retinal image motion for target velocity in frontal and depth planes. Moreover, vestibular inputs contribute to the predictive pursuit responses of FEF neurons. In contrast, the majority of SEF pursuit neurons do not code pursuit metrics and many SEF neurons are reported to be active in more complex tasks. These results suggest that FEF- and SEF-pursuit neurons are involved in different aspects of vestibular-pursuit interactions and that eye velocity coding of SEF pursuit neurons is specialized for the task condition.
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: 福島 菊郎

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