HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Bessou, P. Articles by Pages, B. Search for Related Content PubMed PubMed Citation Articles by Bessou, P. Articles by Pages, B.

1. Membrane potential changes of single intrafusal muscle fibres were intracellularly recorded in spindles of cat's tenuissimus muscle on stimulating single static or dynamic fusimotor axons.

2. One third of responses elicited on stimulating static fusimotor axons were action potentials while the remainder were junction potentials. Repetitive stimulation of static axons eliciting junction potentials produced summation, facilitation and in some instances the appearance of propagated potentials.

3. All the responses evoked on stimulating dynamic fusimotor axons were junction potentials which summated but never produced propagated potentials during repetitive stimulation.

4. Most of the impalements leading to junction potentials were located in the transition zone between intra- and extra-capsular regions of spindle poles.

5. The relation between extracellular and intracellular potentials elicited by stimulation of a fusimotor axon (static or dynamic) makes it possible to assign a physiological nature to the junction potentials recorded intracellularly and to exclude effects attributable to injury.

6. A coupling between junction potential and local contraction is indirectly inferred from the frequencygrams which have been previously obtained during single shock stimulation of dynamic fusimotor axons.

This article has been cited by other articles:

				F. Emonet-Denand, Y. Laporte, and J. Petit Functional Consequences of Bag2 and Chain Fiber Coactivation by Static gamma -Axons in Cat Spindles J Neurophysiol, March 1, 1997; 77(3): 1425 - 1431. [Abstract] [Full Text] [PDF]