Summary
Transmission of nerve signals in the crayfish brain was studied by means of the transfer function derived from input-output analysis with random stimulation. The transfer function was measured in the form of frequency-response-function and represented by Bode plot. Two classes of the frequency-response-functions were discriminated, corresponding to two types of response patterns evoked by the constant frequency stimuli. The first type had the characteristics of a band pass filter similar to an underdamped resonant circuit. The second one had the characteristics of a phase lag circuit, occasionally, with additional small positive or negative peak at almost the same frequency as the resonance of the first type. A few possibilities for the resonance and the phase lag mechanisms were discussed.
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Watanabe, Y. Statistical measurement of signal transmission in the central nervous system of the crayfish. Kybernetik 6, 124–130 (1969). https://doi.org/10.1007/BF00274105
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DOI: https://doi.org/10.1007/BF00274105