[Cross-correlation analysis of the impulse activity of spinal locomotor center neurons].
Crosscorrelation analysis of neuronal impulse activity of spinal locomotor centres was performed on thalamic immobilized cats. No correlation was observed at small time intervals (time displacement of one spike train with respect to another did not exceed 54 ms during plotting the crosscorrelation histogram) both at rest and during generation of efferent discharges. Impulse trains of neurons could correlate only at large time intervals (maximum of time displacement of one spike train relative to another was not less than 4-8 s). A weak correlative dependence was found at large time intervals (4-8 s) between the current mean frequency of a neuron and the intensity of discharge in a motor nerve. No correlation was found between the changes in momentary frequency of a neuron and the intensity of discharge in a motor nerve. Possible reasons for the absence of correlation dependence at a small time interval and its presence at a large time interval are discussed.
D000818:Animals; D002415:Cats; D004594:Electrophysiology; D007395:Interneurons / Q000502:physiology; D008124:Locomotion; D013116:Spinal Cord / Q000502:physiology*
Krosskorreliatsionnyĭ analiz impul 'snoĭ aktivnosti neĭronov spinal 'nykh lokomotornykh tsentrov.