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Spatiotemporal processing of linear acceleration: primary afferent and central vestibular neuron responsesSpatiotemporal convergence and two-dimensional (2-D) neural tuning have been proposed as a major neural mechanism in the signal processing of linear acceleration. To examine this hypothesis, we studied the firing properties of primary otolith afferents and central otolith neurons that respond exclusively to horizontal linear accelerations of the head (0.16-10 Hz) in alert rhesus monkeys. Unlike primary afferents, the majority of central otolith neurons exhibited 2-D spatial tuning to linear acceleration. As a result, central otolith dynamics vary as a function of movement direction. During movement along the maximum sensitivity direction, the dynamics of all central otolith neurons differed significantly from those observed for the primary afferent population. Specifically at low frequencies (
Document ID
20040112729
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Angelaki, D. E.
(Washington University School of Medicine; Central Institute for the Deaf St. Louis, Missouri 63110, United States)
Dickman, J. D.
Date Acquired
August 21, 2013
Publication Date
October 1, 2000
Publication Information
Publication: Journal of neurophysiology
Volume: 84
Issue: 4
ISSN: 0022-3077
Subject Category
Aerospace Medicine
Funding Number(s)
CONTRACT_GRANT: EY-12814
CONTRACT_GRANT: DC-04160
CONTRACT_GRANT: EY-10851
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Neuroscience
Non-NASA Center

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