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Functional properties of rotation-sensitive neurons in the posterior parietal association cortex of the monkey.

Functional properties of rotation-sensitive neurons in the posterior parietal association cortex of the monkey. Research Abstract Details 

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  • Functional properties of rotation-sensitive neurons in the posterior parietal association cortex of the monkey. Abstract Text:

    h sakataH Sakata,h shibutaniH Shibutani,y itoY Ito,k tsurugaiK Tsurugai,s mineS Mine,m kusunokiM Kusunoki,

    We studied the functional properties of rotation-sensitive (RS) neurons of the posterior parietal association cortex in detail. We classified 58 neurons as RS neurons on the basis of statistical analysis, to indicate that their responses to rotary movement were significantly greater (P < 0.01) than those to linear movement of the same stimulus. We calculated rotation index, 1-(L/R), in 82 cells, where L/R is the ratio of net response to linear movement to that to rotary movement. All the RS neurons had rotation index greater than or equal to 0.3. The recording site of these RS neurons was localized in the posterolateral part of area PG (area 7a of Vogt), on the anterior bank of the caudal superior temporal sulcus (STS), in the region partly overlapping the medial superior temporal (MST) area. We compared the response of RS neurons to rotation with that to shearing movement as well as to linear movement. In the majority of RS neurons the ratio of shearing response to rotation response (S/R) was smaller than the ratio of linear response to rotation response (L/R), indicating that the response to rotation was not due to a simple combination of linear movements in the opposite direction. Most of the RS neurons responded to the rotary movement of a single spot as well as that of a slit, although the response was smaller (average 70%) for the former. Most of the RS neurons had large receptive fields (60-180 degrees in diameter) and their responses were independent of the position within the receptive field. The responses of most RS neurons increased monotonically with the increase in angular velocity and were also dependent on the size of the stimulus, although the rate of increase was small when the length was more than 10 degrees. The majority of RS neurons (37/58) responded better to rotation in depth than to that in the frontoparallel plane. Some of them (12/37) responded to diagonal rotation rather than to sagittal or horizontal rotation. We found that some depth RS neurons showed reversal in the preferred direction when we used a trapezoidal window-like plate as the rotating stimulus in the monocular viewing condition, just as occurs in the case of the Ames window illusion. The response of some RS neurons (5/7) was enhanced by tracking eye movement.(ABSTRACT TRUNCATED AT 400 WORDS)

    Functional properties of rotation-sensitive neurons in the posterior parietal association cortex of the monkey. Publishing Authors By Initials

    h sakataH Sakata,h shibutaniH Shibutani,y itoY Ito,k tsurugaiK Tsurugai,s mineS Mine,m kusunokiM Kusunoki,

    For similar psychological phenomena and processes: mental processes: perception: visual perception research abstracts see: psychological phenomena and processes: mental processes: perception: visual perception research

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    Functional properties of rotation-sensitive neurons in the posterior parietal association cortex of the monkey. Journal Published:

    PUBLICATION TYPE: Research Support, Non-U.S. Gov

    Journal: Experimental brain research. Experimentelle Hirnfo

    VOLUME: 101

    Page Numbers: 183-202

    Journal Abbreviation:

    ISSN: 0014-4819

    DAY: 15

    MONTH: 02

    YEAR: 1994

    Functional properties of rotation-sensitive neurons in the posterior parietal association cortex of the monkey. Information

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    LANGUAGE: eng

    NlmUniqueID: 43312

    Functional properties of rotation-sensitive neurons in the posterior parietal association cortex of the monkey. Keywords Mesh Terms:

    KEYWORDS: Visual Perception

    MESH TERMS: physiology

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    Grant and Affiliation Information for Functional properties of rotation-sensitive neurons in the posterior parietal association cortex of the monkey.

    AFFILIATION: 1st Department of Physiology, Nihon University School of Medicine, Tokyo, Japan.

    Country: GERMANY

    GERMANY Research PublicationGERMANY Research Publication

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    MEDLINETA: Exp Brain Res

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