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A comparison of visual responses in two pretectal nuclei and in the superior colliculus of the cat.

A comparison of visual responses in two pretectal nuclei and in the superior colliculus of the cat. Research Abstract Details 

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  • A comparison of visual responses in two pretectal nuclei and in the superior colliculus of the cat. Abstract Text:

    a schoppmannA Schoppmann,k p hoffmannK P Hoffmann,

    Single unit recordings from 220 units were obtained from the nuclei praetectalis anterior (NPA) and posterior (NPP) of 30 immobilized, anesthetized cats. Quantitative analysis of pretectal (PT) visual activity was mainly based on recordings from the NPP. For comparison, 160 collicular (CS) neurons were studied. A strong sensitivity for moving objects was evident in both samples. The following main types of PT activity were categorized: (A) slow movement, direction-selective units (21%); (B) slow movement, nondirection-selective units (19%); (C) units nonselective for stimulus velocity and direction (24%); (D) jerk movement selective, nondirection-selective units (36%). Latency measurements following single shocks to optic chiasm (OX) and tract (OT) showed mainly slow conducting fiber input to the PT and CS which can be divided into two different groups by conduction properties and synaptic delay: direct W-input and delayed W-input. Fast Y-fiber input of both types, direct and indirect, was recorded at both sites, PT and CS.

    A comparison of visual responses in two pretectal nuclei and in the superior colliculus of the cat. Publishing Authors By Initials

    a schoppmannA Schoppmann,kp hoffmannKP Hoffmann,

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

    PUBMED ID PMID:

    MEDLINE DATE:

    A comparison of visual responses in two pretectal nuclei and in the superior colliculus of the cat. Journal Published:

    PUBLICATION TYPE: Journal Article

    Journal: Experimental brain research. Experimentelle Hirnfo

    VOLUME: 35

    Page Numbers: 495-510

    Journal Abbreviation:

    ISSN: 0014-4819

    DAY: 2

    MONTH: May

    YEAR: 1979

    A comparison of visual responses in two pretectal nuclei and in the superior colliculus of the cat. Information

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    LANGUAGE: eng

    NlmUniqueID: 43312

    A comparison of visual responses in two pretectal nuclei and in the superior colliculus of the cat. Keywords Mesh Terms:

    KEYWORDS: Visual Perception

    MESH TERMS: physiology

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    Grant and Affiliation Information for A comparison of visual responses in two pretectal nuclei and in the superior colliculus of the cat.

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    Country: GERMANY, WEST

    GERMANY, WEST Research PublicationGERMANY, WEST Research Publication

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    MEDLINETA: Exp Brain Res

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