Abstract
Experiments performed on decerebrate cats showed that afferent activity accompanying scratching consists of two components—one with a tonic and the other with a periodic phase. The first of these is determined by limb position and the second closely related to speed and amplitude of angular changes occurring at the joints. Peak integral afferent activity within the cycle occurred at the end of the scratch phase itself, when aiming muscles are already operating. These two components of afferent activity produce corresponding changes in depolarization at primary afferent terminals (DPA), which are added to those DPA changes brought about by the effects of the central generator. Statistical relationships between the aforementioned processes were investigated. Mechanisms underlying afferent control over the operation of the scratch generator are discussed.
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A. A. Bogomolets Institute of Physiology, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Neirofiziologiya, Vol. 20, No. 1, pp. 49–57, January–February, 1988.
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Baev, K.V., Esipenko, V.B. Changes in the intensity of integral afferent inflow from limb receptors and in primary afferent terminal polarization during scratching in the decerebrate cat. Neurophysiology 20, 39–46 (1988). https://doi.org/10.1007/BF02198424
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DOI: https://doi.org/10.1007/BF02198424