D.N. LAPSHIN, G.I.ROZHKOVA, V.Yu.VEDENINA

ON THE STIMULUS PARAMETERS DETERMINING RESPONSES OF CERCAL INTERNEURONS


The identified cercal interneurons 10-3a and 9-1b of the cricket were studied using a method of stimulation by means of linearly changing signals in order to reveal which parameter (velocity, acceleration, etc.) of a wind stimulus determine the responses. It was found that, for the neuron 10-3a, the driving factor was the air flow acceleration while for the neuron 9-1b, it was the derivative of acceleration. Since earlier, the neuron 10-3a was considered as velocity-sensitive unit, the results obtained in this study indicated that some previous data should be revised and that the strategy of investigation should be corrected accordingly.
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Example of neuron 10-3 response

Directivity of the neuron 10-3

Example of neuron 9-1b response

Directivity of the neuron 9-1b

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