総説
連載解説 : 生物学のための情報論
―情報とは何か? 情報量とは何か? 生命現象との関係は何か?―
第5回
第5回
2006 年 23 巻 2 号 p. 38-43
詳細
2006 年 23 巻 2 号 p. 38-43
Part 5. Actual measurement of the rate of information transmitted along cricket wind sensory neurons is shown. Input-output coherence is measured for the practical calculation of neuronal information, instead of signal-to-noise ratio. The measurement reveals that the sensory neuron can transmit information at the rate of 400 bit per second at its maximum. Energy threshold of the sensory neuron is determined to be at the order of kBT. Based on these measurements, entropy cost of information in living neuron is also estimated to be very close to the thermo dynamic limit of 0.7kB per bit of information.
