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Accommodation in motoneurones of the rat and the cat

Accommodation in motoneurones of the rat and the cat J. Phy8iol. (1961), 156, pp. 75-92 With 9 text-figures Printed in Great Britain ACCOMMODATION IN MOTONEURONES OF THE RAT AND THE CAT By K. BRADLEY AND G. G. SOMJEN From the Department of Physiology, University of Otago, Dunedin, New Zealand (Received 26 September 1960) The response of motoneurones to slowly changing or steady stimuli is of interest for the understanding of their function, because ventral horn cells are thought to be continually subject to a varying degree of excitation and inhibition. Fuortes & Hubel Fuortes and (1956), (1957) Kolmodin & Skoglund (1958) considered that sustained facilitation as well as rhyth- mical reflex are due to a drive. Frank & Fuortes firing steady synaptic (1956) have observed slow spontaneous changes in the level of the mem- brane potential a or less of motoneurone more paralleled by variations of its electric threshold, and in the same paper described experiments indica- ting that motoneurones of the cat accommodate to subliminal d.c. pulses only to a very limited degree. This is in keeping with the implications of earlier experiments by Barron & Matthews and Fuortes (1938) by (1954) showing that 'ascending polarization' with direct currents can cause continued firing of ventral horn cells. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Journal of Physiology Wiley

Accommodation in motoneurones of the rat and the cat

The Journal of Physiology , Volume 156 (1) – Jan 1, 1961

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References (26)

Publisher
Wiley
Copyright
© 2014 The Physiological Society
ISSN
0022-3751
eISSN
1469-7793
DOI
10.1113/jphysiol.1961.sp006659
Publisher site
See Article on Publisher Site

Abstract

J. Phy8iol. (1961), 156, pp. 75-92 With 9 text-figures Printed in Great Britain ACCOMMODATION IN MOTONEURONES OF THE RAT AND THE CAT By K. BRADLEY AND G. G. SOMJEN From the Department of Physiology, University of Otago, Dunedin, New Zealand (Received 26 September 1960) The response of motoneurones to slowly changing or steady stimuli is of interest for the understanding of their function, because ventral horn cells are thought to be continually subject to a varying degree of excitation and inhibition. Fuortes & Hubel Fuortes and (1956), (1957) Kolmodin & Skoglund (1958) considered that sustained facilitation as well as rhyth- mical reflex are due to a drive. Frank & Fuortes firing steady synaptic (1956) have observed slow spontaneous changes in the level of the mem- brane potential a or less of motoneurone more paralleled by variations of its electric threshold, and in the same paper described experiments indica- ting that motoneurones of the cat accommodate to subliminal d.c. pulses only to a very limited degree. This is in keeping with the implications of earlier experiments by Barron & Matthews and Fuortes (1938) by (1954) showing that 'ascending polarization' with direct currents can cause continued firing of ventral horn cells.

Journal

The Journal of PhysiologyWiley

Published: Jan 1, 1961

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