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 de Groat, W. C. Articles by Ryall, R. W. Search for Related Content PubMed PubMed Citation Articles by de Groat, W. C. Articles by Ryall, R. W.

1. Reflexes to sacral parasympathetic neurones were studied by electrophysiological techniques in decerebrate, in chloralose-anaesthetized, and in chronic spinal cats.

2. Excitatory reflexes from pelvic nerve and sacral somatic afferent nerve fibres were present before and after chronic transection of the spinal cord, but the latencies differed markedly. It was concluded that the long-latency reflexes observed when the spinal cord was intact involved long-loop reflexes to the brain-stem. The weak, short-latency reflexes in the chronic spinal cat were never observed when the spinal cord was intact and could be due to reorganized spinal connexions. The short-latency reflexes are probably unimportant in normal micturition.

3. Stimulation of afferent fibres in the pelvic or sacral somatic nerves produced short-latency inhibitory post-synaptic potentials (IPSPs) and inhibition of discharges in parasympathetic neurones. This inhibition was due to a spinal reflex.

4. A local reflex was demonstrated in the pelvic plexus. This was probably a cholinergic axon reflex, but the remote possibility that it was a local cholinergic reflex involving sensory neurones in the bladder wall has not been excluded.

This article has been cited by other articles:

				J. F. B. Morrison The discovery of the pontine micturition centre by F. J. F. Barrington Exp Physiol, June 1, 2008; 93(6): 742 - 745. [Full Text] [PDF]

				J. P. Woock, P. B. Yoo, and W. M. Grill Activation and inhibition of the micturition reflex by penile afferents in the cat Am J Physiol Regulatory Integrative Comp Physiol, June 1, 2008; 294(6): R1880 - R1889. [Abstract] [Full Text] [PDF]

				C. Tai, B. Shen, J. Wang, M. B. Chancellor, J. R. Roppolo, and W. C. de Groat Inhibitory and excitatory perigenital-to-bladder spinal reflexes in the cat Am J Physiol Renal Physiol, March 1, 2008; 294(3): F591 - F602. [Abstract] [Full Text] [PDF]

				J.-R. Vignes, M. S. A. Deloire, K. G. Petry, and F. Nagy Characterization and restoration of altered inhibitory and excitatory control of micturition reflex in experimental autoimmune encephalomyelitis in rats J. Physiol., January 15, 2007; 578(2): 439 - 450. [Abstract] [Full Text] [PDF]

				L. Mazieres, C. H. Jiang, and S. Lindstrom Recurrent inhibition of the bladder C fibre reflex in the cat and its response to naloxone J. Physiol., September 1, 2006; 575(2): 603 - 615. [Abstract] [Full Text] [PDF]

				M. A. Vizzard Increased expression of spinal cord Fos protein induced by bladder stimulation after spinal cord injury Am J Physiol Regulatory Integrative Comp Physiol, July 1, 2000; 279(1): R295 - R305. [Abstract] [Full Text] [PDF]

				C.-L. Cheng, J.-C. Liu, S.-Y. Chang, C.-P. Ma, and W. C. de Groat Effect of capsaicin on the micturition reflex in normal and chronic spinal cord-injured cats Am J Physiol Regulatory Integrative Comp Physiol, September 1, 1999; 277(3): R786 - R794. [Abstract] [Full Text] [PDF]