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 Arndt, J. O. Articles by Röhnelt, M. Search for Related Content PubMed PubMed Citation Articles by Arndt, J. O. Articles by Röhnelt, M.

1. The differences in spike discharge from atrial mechanoreceptors in vivo suggest the existence of different receptor types. To test this possibility, and to see how atrial receptors compare with other mechanoreceptors, their response was studied under comparable stimulus conditions.

2. Sinusoidal length changes, with frequencies from 1 to 10 Hz and amplitudes of 1·5-5·0 mm at a given static extension, were imposed in situ on strips of atrial receptor areas of cats.

3. The receptor response was evaluated from functional single fibres in terms of number of spikes per stimulus period, average discharge rate, instantaneous spike frequency, and phase angle between forcing function and instantaneous frequency.

4. Irrespective of the fibre type, atrial fibres appear to originate from identical mechanoreceptors which sense length at low stimulus frequency and low stimulus amplitudes, but also sense velocity in the high frequency range and with large stimulus amplitudes.

5. The difference in the discharge pattern and in the functional behaviour of the atrial fibres in vivo can be explained on the basis of identical receptors.

6. The difference in the temporal occurrence of the atrial burst is still open to debate, but probably is related to the site of the receptor.

This article has been cited by other articles:

				J. A. Armour Cardiac neuronal hierarchy in health and disease Am J Physiol Regulatory Integrative Comp Physiol, August 1, 2004; 287(2): R262 - R271. [Abstract] [Full Text] [PDF]

				R. D. Foreman, R. W. Blair, H. R. Holmes, and J. A. Armour Correlation of ventricular mechanosensory neurite activity with myocardial sensory field deformation Am J Physiol Regulatory Integrative Comp Physiol, April 1, 1999; 276(4): R979 - R989. [Abstract] [Full Text] [PDF]