[The structure of the impulse activity of cold thermoreceptors at different levels].
Impulse activity of cold fibres (n. infraorbitalis) has been studied in acute experiments on anesthetized rabbits, with an uninterrupted fall of the skin temperature from 39 degrees to 7 degrees C with the rate of 0.8 +/- 0.05 degrees/min. Analysis of interspike intervals (ISI) in a discharge of receptors has shown that histograms of ISI changed several times in the studied range of temperatures, which reflects a change of the discharge pattern. Each cold receptor possesses an individual mode of the response, which permits dwelling on perception of different characteristics of the temperature stimulus by a sum of thermoreceptors.
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D000818:Animals; D016009:Chi-Square Distribution; D003080:Cold Temperature; D008564:Membrane Potentials / Q000502:physiology; D011817:Rabbits; D012867:Skin / Q000294:innervation; D012879:Skin Physiological Phenomena; D012881:Skin Temperature / Q000502:physiology; D013696:Temperature; D013823:Thermoreceptors / Q000502:physiology*
Struktura impul'snoĭ aktivnosti kholodykh termoretseptorov pri ee razlichnykh urovniakh.