Accession Number:

AD0620945

Title:

EXCITATORY AND INHIBITORY BALDDER RESPONSES TO STIMULATION OF THE CEREBRAL CORTEX IN THE CAT,

Descriptive Note:

Corporate Author:

OSLO UNIV (NORWAY) NEUROPHYSIOLOGICAL LAB

Personal Author(s):

Report Date:

1963-03-06

Pagination or Media Count:

14.0

Abstract:

A continuous intravesical pressure recording was established in 22 anesthetized cats by operative canalization of the bladder cavity, leaving the urinary outlet intact. The intravesical pressure variations caused by controlled volume changes were studied, and the alterations in bladder activity in response to stimulation of the cerebral cortex were recorded. The following excitatory bladder reactions on cortical stimulation are described augmentation of the rhythmic contractions, dropwise expulsion of the bladder contents with incomplete emptying of the vesical cavity and, finally, a normal micturition act with forceful detrusor contractions. With regard to inhibitory effects the following responses were obtained reduction or complete inhibition of the rhythmic bladder activity, arrest of the urination act or suppressed micturition. In aggreement with previous investigations excitatory bladder responses were obtained from the first sensory-motor area and from the anterior cingulate region. In addition, excitatory effects were elicited by stimulation of the anterior ectosylvian and anterior sylvian gyri the somatic sensorymotor area II. Previous observations of inhibitory influence on bladder activity from the first sensory-motor area were confirmed. In addition, inhibitory effects were produced from the somatic sensory-motor area II, the subcallosal part of the anterior cingulate region and the orbital gyrus. All the various types of bladder reactions described above were obtained from any of these regions. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE