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  1. 010 学術雑誌論文
  2. 松下, 敦子 / MATSUSHITA, Atsuko

Neuronal Sensitivity to Microsecond Time Disparities in the Electrosensory System of Gymnarchus niloticus

https://ir.soken.ac.jp/records/4015
https://ir.soken.ac.jp/records/4015
d0466f73-0ef0-4225-b18d-6f00fdecbb7f
名前 / ファイル ライセンス アクション
11424.full.pdf 11424.full (930.4 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2013-10-11
タイトル
タイトル Neuronal Sensitivity to Microsecond Time Disparities in the Electrosensory System of Gymnarchus niloticus
タイトル
タイトル Neuronal Sensitivity to Microsecond Time Disparities in the Electrosensory System of Gymnarchus niloticus
言語 en
言語
言語 eng
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
資源タイプ journal article
著者 MATSUSHITA, Atsuko

× MATSUSHITA, Atsuko

MATSUSHITA, Atsuko

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KAWASAKI, Masashi

× KAWASAKI, Masashi

KAWASAKI, Masashi

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著者別名 松下, 敦子

× 松下, 敦子

松下, 敦子

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抄録
内容記述タイプ Abstract
内容記述 To perform the jamming avoidance response (JAR), the weakly electric fish Gymnarchus detects time disparities on the order of microseconds between electrosensory signals received by electroreceptors in different parts of the body surface. This paper describes time-disparity thresholds of output neurons of the electrosensory lateral line lobe (ELL), where the representation of timing information is converted from a time code to a firing-rate code. We recorded extracellular single-unit responses from pyramidal cells in the ELL to sinusoidally modulated time disparity with various depths (0-200 μs). Threshold sensitivity to time disparities measured in 123 units ranged from 0.5 to 100 μs and was ≤5 μs in 60% of the units. The units from pyramidal cells in the inner and outer cell layers of the ELL responded equally well to small time disparities. The neuronal thresholds to time disparities found in the ELL are comparable with those demonstrated in behavioral performance of the JAR. The sensitivity of ELL units to small time disparities was unaffected when the center of the cyclic time-disparity modulation was shifted over a wide range (up to 250 μs), indicating an adaptation mechanism for steady-state time disparities that preserves the sensitivity to small dynamic changes in time disparities. Phase-locked input neurons, which provide time information to the ELL by phase-locked firing of action potentials, did not adapt to steady-state time shifts of sensory signals. This suggests that the adaptation emerges within the ELL.
書誌情報 Journal of Neuroscience
en : Journal of Neuroscience

巻 25, 号 49, p. 11424-11432, 発行日 2005-12
出版者
出版者 The Society for Neuroscience
ISSN
収録物識別子タイプ ISSN
収録物識別子 0270-6474
DOI
関連タイプ isIdenticalTo
識別子タイプ DOI
関連識別子 https://doi.org/10.1523/JNEUROSCI.3670-05.2005
関連名称 10.1523/JNEUROSCI.3670-05.2005
権利
権利情報 © 2013 by the Society for Neuroscience
関連サイト
識別子タイプ URI
関連識別子 http://www.jneurosci.org/site/misc/ifa_policies.xhtml
関連名称 Copyright
フォーマット
内容記述タイプ Other
内容記述 application/pdf
著者版フラグ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
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