help button home button Biophys. J.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS

Biophysical Journal 6: 201-215 (1966)
© 1966 the Biophysical Society

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Firth, D. R.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Firth, D. R.

Interspike Interval Fluctuations in the Crayfish Stretch Receptor

David R. Firth

ABSTRACT

Trains of nerve impulses from the crayfish stretch receptor under steady conditions are found to be extremely regular with a standard deviation of S = 0.7 x 10-2{tau} when {tau}, the mean interval, is in the 15 to 80 msec range. Such a small fluctuation increases the problems of film recording, accurate measurement of intervals, and especially, drifts. Experimental and mathematical techniques are described to obviate these problems. Evidence is found for a serial correlation coefficient of about -0.2 in the range, {tau} = 35 msec to {tau} = 70 msec. Shot noise and Johnson noise in a long axon are evaluated in detail and are shown to be comparable in size. It is also shown that neither shot noise nor Johnson noise is large enough to explain simply the observed interval fluctuations. Other types of membrane noise are discussed.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1966 by the Biophysical Society.