Alternative atrategy for driving voltage-oscillator in neocortex of rats

• Material Type: 博士論文
• Title: Alternative atrategy for driving voltage-oscillator in neocortex of rats
• Author/Editor: Fukuda, Takako; Tominaga, Takashi; Tominaga, Yoko; Kanayama, Hiroyuki; Kato, Nobuo; Yoshimura, Hiroshi
• Author Heading: Fukuda, Takako; Tominaga, Takashi; Tominaga, Yoko; Kanayama, Hiroyuki; Kato, Nobuo; Yoshimura, Hiroshi
• Publication, Distribution, etc.: Elsevier|Japan Neuroscience Society
• Publication Date: 2023-01-13
• Publication Date (W3CDTF): 2023-01-13
• Alternative Title: ラット大脳皮質における電位オシレーターを駆動するための状況に応じた戦略
• Degree grantor/type: 徳島大学
• Date Granted: 2023-03-23
• Date Granted (W3CDTF): 2023-03-23
• Dissertation Number: 甲第3715号
• Degree Type: 博士（歯学）
• Text Language Code: eng
• Subject Heading: visual cortex; oscillation; voltage-oscillator; caffeine; optical recording; Signal propagation
• Target Audience: 一般
• Note (General): Information integration in the brain requires functional connectivity between local neural networks. Here, we investigated the interregional coupling mechanism from the viewpoint of oscillations using optical recording methods. Low-frequency electrical stimulation of rat neocortical slices in a caffeine-containing medium induced oscillatory activity between the primary visual cortex (Oc1) and medial secondary visual cortex (Oc2M), in which the oscillation generator was located in the Oc2M and was triggered by a feedforward signal. During to-and-fro oscillatory activity, neural excitation was marked in layer II/III. When the upper layer was disrupted between Oc1 and Oc2M, feedforward signals could propagate through the deep layer and switch on the oscillator in the Oc2M. When the lower layer was disrupted between Oc1 and Oc2M, feedforward signals could propagate through the upper layer and switch on the oscillator in the Oc2M. In the backward direction, neither the upper layer cut nor the lower layer cut disrupted the propagation of the oscillations. In all cases, the horizontal and vertical pathways were used as needed. Fluctuations in the oscillatory waveforms of the local field potential at the upper and lower layers in the Oc2M were reversed, suggesting that the oscillation originated between the two layers. Thus, the neocortex may work as a safety device for interregional communications in an alternative way to drive voltage oscillators in the neocortex.
• Persistent ID (NDL): info:ndljp/pid/12911512; https://dl.ndl.go.jp/pid/12911512
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• Acquisition Basis: 博士論文（自動収集）
• Date Accepted (W3CDTF): 2023-07-08T03:42:31+09:00
• Format (IMT): application/pdf
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• Periodical Title (URI): http://repo.lib.tokushima-u.ac.jp/118314
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