1994
DOI: 10.1113/expphysiol.1994.sp003801
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Primary and secondary afferent discharges from the same spindle during chain fibre contraction in cat tenuissimus muscle

Abstract: SUMMARYPairs of I a and II afferent fibres supplying primary and secondary endings lying in the same tenuissimus spindles were prepared in barbiturate anaesthetized cats in order to compare the variability in the rhythm of discharge of the two endings during responses elicited by the contraction of different intrafusal muscle fibres, especially by chain fibres. In these spindles, the intrafusal muscle fibres supplied by single static y-axons were identified with a recently developed technique based on the type… Show more

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Cited by 4 publications
(6 citation statements)
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“…The effects of static gamma stimulation vary considerably from one example to another, and this variation must presumably be related to the extent to which bag 2 and chain fibres are excited by a given γ axon. In the case of primary afferents, methods have been worked out for distinguishing the contribution of these two intrafusal fibre types (Celichowski et al . 1994 a ; Taylor et al .…”
Section: Resultsmentioning
confidence: 99%
See 2 more Smart Citations
“…The effects of static gamma stimulation vary considerably from one example to another, and this variation must presumably be related to the extent to which bag 2 and chain fibres are excited by a given γ axon. In the case of primary afferents, methods have been worked out for distinguishing the contribution of these two intrafusal fibre types (Celichowski et al . 1994 a ; Taylor et al .…”
Section: Resultsmentioning
confidence: 99%
“…2 and may be competition between two separate impulse initiation sites for bag 2 and chain fibres. Chain fibre activation alone with regular high‐frequency stimulation would not be expected to have this result (see Celichowski et al . 1994 a ).…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The in‐series arrangement of primary ending–secondary ending(s)–activated chain fibres requires further consideration of the mechanosensory transduction process and why the secondary response is less variable than that of the primary. The difference seems to be closely linked to the ability of the primary to be driven 1:1 by chain‐fibre activation at constant stimulation rates, whereas secondaries are only rarely driven in this way (Celichowski et al., 1994). The driving response of the primary is thought to be caused by the high fusion frequency of chain‐fibre contraction (Bessou & Pagès, 1969).…”
Section: Effects Of Fusimotor Stimulationmentioning
confidence: 99%
“…This practice has been followed in many studies concerning various movements from rhythmic locomotion to reflex and voluntary movements performed on muscle spindles of cats. [6][7][8] A related measure of association is the cross-intensity function that estimates the instantaneous firing rate of a neuron at different lagtimes given the previous discharges of another neuron. 9, 10 Both the cross-correlation and the cross-intensity functions have been used as histogrambased measures of association between only two pairs of neuronal activity.…”
Section: Introductionmentioning
confidence: 99%