Neuronal activities in ventrobasal complex of thalamus and in trigeminal main sensory nucleus during EEG desynchronization in anesthetized rats

Kazuyuki Kanosue, Teruo Nakayama*, Paul D. Andrew, Zaiwen Shen, Makoto Sato

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Activities of somatosensory relay neurons responding to orofacial mechanical stimulation were examined in the ventrobasal complex of the thalamus (VB) and in the trigeminal main sensory nucleus (MSN) during EEG dysenchronization in urethane-anesthetized rats. EEG desynchronization was induced by scrotal warming in a temperature range of 35-40 °C. Responses of most VB neurons to receptive-field stimulation were augmented during EEG desynchronization, when compared to responses during synchronization. Spontaneous activity of VB neurons also increased with EEG desyncronization. Responses of MSN neurons to receptive-field stimulation did not change appreciably when the EEG pattern was altered. If a VB neuron was induced by iontophoretic application of glutamate to fire at the same rate as seen during EEG desynchronization, a similar increased response to receptive-field stimuli was also observed. The augmented response of the VB neuron during desynchronization may thus have resulted from increased excitability of the neuron itself.

本文言語English
ページ(範囲)90-97
ページ数8
ジャーナルBrain Research
379
1
DOI
出版ステータスPublished - 1986 7月 30
外部発表はい

ASJC Scopus subject areas

  • 神経科学(全般)
  • 分子生物学
  • 臨床神経学
  • 発生生物学

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