In vivo recording of postsynaptic potentials and low threshold spikes in W cells of the cat's lateral geniculate nucleus.

In vivo recording of postsynaptic potentials and low threshold spikes in W cells of the cat's lateral geniculate nucleus. Research Abstract Details 

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In vivo recording of postsynaptic potentials and low threshold spikes in W cells of the cat's lateral geniculate nucleus. Abstract Text:

F S Lo,S M Sherman,

We obtained good intracellular recording from 5 W cells in the C-laminae of the cat's lateral geniculate nucleus. The recordings were made from an anesthetized and paralyzed in vivo preparation. We found a consistent pattern for the postsynaptic potentials evoked from activation of the optic chiasm: first was an IPSP followed by an EPSP. This is very different from the pattern seen in X and Y cells, for which an EPSP always appears first and is then followed by an IPSP. We interpret the pattern for W cells as follows. The initial IPSP is disynaptic; this involves retinogeniculate conduction over very fast Y axons and a relay through an interneuron. The EPSP is monosynaptic, reflecting retinogeniculate conduction over very slow W axons. A possible implication for this is that activity over the Y pathway may generally inhibit geniculate W cells before these W cells can be excited by their retinal afferents. Finally, we elicited from each of these W cells voltage-dependent, low threshold spikes, which are very similar to those displayed by X and Y cells. These spikes can interrupt normal retinogeniculate transmission, and they are prevented by maintaining relatively depolarized membrane potentials.

In vivo recording of postsynaptic potentials and low threshold spikes in W cells of the cat's lateral geniculate nucleus. Publishing Authors By Initials

FS Lo,SM Sherman,

For similar nervous system: synapses research abstracts see: nervous system: synapses research

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In vivo recording of postsynaptic potentials and low threshold spikes in W cells of the cat's lateral geniculate nucleus. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Experimental brain research. Experimentelle Hirnfo

VOLUME: 81

Page Numbers: 438-42

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ISSN: 0014-4819

DAY: 15

MONTH: 02

YEAR: 1990

In vivo recording of postsynaptic potentials and low threshold spikes in W cells of the cat's lateral geniculate nucleus. Information

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LANGUAGE: eng

NlmUniqueID: 43312

In vivo recording of postsynaptic potentials and low threshold spikes in W cells of the cat's lateral geniculate nucleus. Keywords Mesh Terms:

KEYWORDS: Synapses

MESH TERMS: physiology

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Grant and Affiliation Information for In vivo recording of postsynaptic potentials and low threshold spikes in W cells of the cat's lateral geniculate nucleus.

AFFILIATION: Department of Neurobiology, State University of New York, Stony Brook 11794-5230.

Country: GERMANY, WEST

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MEDLINETA: Exp Brain Res

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