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The Real Bladder Electromyogram
Author(s) -
CRAGGS M. D.,
STEPHENSON J. D.
Publication year - 1976
Publication title -
british journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.773
H-Index - 148
eISSN - 1464-410X
pISSN - 0007-1331
DOI - 10.1111/j.1464-410x.1976.tb06678.x
Subject(s) - reflex , baboon , stimulation , medicine , urination , urinary bladder , cats , anatomy , anesthesia , surgery , urinary system
Summary The nature of bladder electrical activity was investigated in anaesthetised cats and 1 baboon. A time‐locked muscle response to sacral ventral root stimulation was most clearly detected within a 10‐40 Hz frequency band, the response preceding the rise in intravesical pressure. During reflex voiding only activity in the 10‐40 Hz band was consistently related to reflex voiding and to the small contractions leading up to voiding. It is concluded that only a very limited part of the wide band electrical activity recorded from the bladder can be considered genuine electromyogram and that the 10‐40 Hz frequency band probably excludes the worst of the artefact. Possible sources of artefact and their relation to changes in intravesical pressure are presented in Table 1.