MONOSYNAPTIC REFLEX RESPONSE OF INDIVIDUAL MOTONEURONS AS A FUNCTION OF FREQUENCY
نویسندگان
چکیده
منابع مشابه
Monosynaptic Reflex Response of Individual Motoneurons as a Function of Frequency
An assemblage of individual motoneurons constituting a synthetic motoneuron pool has been studied from the standpoint of relating monosynaptic reflex responses to frequency of afferent stimulation. Intensity of low frequency depression is not a simple function of transmitter potentiality. As frequency of stimulation increases from 3 per minute to 10 per second, low frequency depression increase...
متن کاملMonosynaptic Reflex Responses of Individual Motoneurons
Individual motoneuron responses to a variety of afferent inputs have been examined. At a given input some motoneurons respond to every trial, some to no trial, and some respond to a certain percentage of trials that is characteristic for the motoneuron at that input. The performance of a motoneuron is expressed by means of a firing index that relates the number of responses to the number of tri...
متن کاملMonosynaptic Reflex Response of Spinal Motoneurons to Graded Afferent Stimulation
Monosynaptic reflex response of spinal motoneurons to graded afferent volleys has been studied in natural populations and in a representative sample of individual motoneurons. By analysis of input-response relations certain of the requirements for initiation of reflex discharge have been defined. Initation of motoneuron discharge by monosynaptic afferent excitatory volleys results from the deve...
متن کاملTransmitter Potentiality of Homonymous and Heteronymous Monosynaptic Reflex Connections of Individual Motoneurons
An assemblage of 110 individual tricipital motoneurons has been examined with the aim of determining those factors that predispose certain motoneurons to heteronymous response in post-tetanic potentiation. Motoneurons that respond most readily to homonymous volleys are not those that respond most readily to post-tetanically potentiated heteronymous volleys. Hence differences in presynaptic orga...
متن کاملTemporal Fluctuation in Excitability of Spinal Motoneurons and Its Influence on Monosynaptic Reflex Response
OBSERVATIONS ON TEMPORAL VARIATION IN MONOSYNAPTIC REFLEX RESPONSE IN THE ACUTELY DECAPITATE CAT INDICATE THE FOLLOWING: 1. Frequency distribution of response amplitude has a nearly normal form often with some degree of negative skewness. Response variation differs only moderately in form and magnitude from one preparation to another. 2. Temporal variation remains essentially constant at differ...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1957
ISSN: 1540-7748,0022-1295
DOI: 10.1085/jgp.40.3.435