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  Sequential stimulation of rat and guinea pig cerebellar granular cells in vitro leads to increasing population activity in parallel fibers

Heck, D. (1999). Sequential stimulation of rat and guinea pig cerebellar granular cells in vitro leads to increasing population activity in parallel fibers. Neuroscience Letters, 263(2-3), 137-140. doi:10.1016/S0304-3940(99)00138-X.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-E6E1-8 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-BFE3-4
Genre: Journal Article

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Heck, D1, 2, Author              
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1Former Department Structure and Function of Natural Nerve-Net , Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497803              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: Sequential stimulation of the granular layer of the cerebellar cortex in vitro using II linearly aligned stimulating electrodes leads to massive population activity in the parallel fiber system and to spike activity in Purkinje cells (Heck, D., Neurosci. Lett., 157 (1993) 95-98; Heck, D., Naturwissenschaften, 82 (1995) 201-2030). The induced parallel fiber activity, however, might have been a result of direct stimulation of parallel fibers themselves and not of stimulation of granular cells or their ascending axons. We report here that using sequential 'moving' stimuli and varying the distance covered by the 'movement', parallel fiber population spike amplitude increases with distance and saturates for distances longer than 1.0 mm. This effect cannot be explained if parallel fibers are directly stimulated, but requires stimulation of the granular cells or their ascending axons. We conclude that the population spike activity and Purkinje cell responses induced by sequential stimulation of the granular layer of the cerebellar cortex slices in this and earlier experiments consists of orthodromic parallel fiber spikes. (C) 1999 Published by Elsevier Science Ireland Ltd. All rights reserved.

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 Dates: 1999-03
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1016/S0304-3940(99)00138-X
BibTex Citekey: 193
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Title: Neuroscience Letters
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 263 (2-3) Sequence Number: - Start / End Page: 137 - 140 Identifier: ISSN: 0304-3940
CoNE: https://pure.mpg.de/cone/journals/resource/954925512448