Dendritic Ca2+ transient increase evoked by wind stimulus in the cricket giant interneuron

Hiroto Ogawa, Yoshichika Baba, Kotaro Oka

研究成果: Article査読

15 被引用数 (Scopus)

抄録

In vivo Ca2+ imaging was applied to the cricket median giant interneuron (MGI), to visualize the dendritic processing of mechanosensory signals. Wind stimulation (air-puff) to the cerci induced a transient increase in the cytosolic Ca2+ concentration ([Ca2+](i)) in the MGI with a latency of a few seconds, suggesting the release of Ca2+ from the intracellular store site in the MGI. The amplitude of the transient increase in [Ca2+](i) in the dendrites depended on the direction of the air-puff, and the increase in [Ca2+](i) evoked by the air-puff was suppressed by the hyperpolarizing current injection which blocked the generation of action potentials. These results indicate that the action potential is necessary to the direction-sensitive increase in [Ca2+](i) induced by wind stimulation. Copyright (C) 1999 Elsevier Science Ireland Ltd.

本文言語English
ページ(範囲)61-64
ページ数4
ジャーナルNeuroscience Letters
275
1
DOI
出版ステータスPublished - 1999 11 5

ASJC Scopus subject areas

  • 神経科学(全般)

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