並列タイトル等セイブツ ノ ジハツセイ ノ ミナモト ニツイテ ゾウリムシ ノ バアイ
The Origin of the Spontaneous Activity of Living cells : In the Case of Paramecium
タイトル(掲載誌)総合技術研究所研究報告=Bulletin of Research Institute for Industrial Technology.
一般注記Single cell organisms such as Paramecium swim in water by beating of a large number of cilia on the cell membrane. They change the swimming direction spontaneously by partial and transient reversal of cilia beating. The signal for the reversal is an electric pulse across the membrane. Its origin is simple thermal fluctuation of protein molecules of ion channels in the membrane, which produces the electric field fluctuation. It is amplified via the circular ionic current across the membrane. Then, the electric-pulse is generated by field-sensitive channels. The whole process is not deterministic but stochastic. The average time interval of the direction change depends on the population density of swimming cells, although its mechanism is not yet made clear. Finally discussions are made on the meaning of "spontaneous" and a possible relationship is suggested between the spontaneous activity of single cell organisms and our“free will."
identifier:http://repository.aitech.ac.jp/dspace/handle/11133/1699
一次資料へのリンクURLhttp://repository.aitech.ac.jp/dspace/bitstream/11133/1699/1/%e7%b7%8f%e7%a0%9411%e5%8f%b7%28P107-112%29.pdf
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)