Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

The real bladder electromyogram

M D Craggs, J D Stephenson

    British Journal of Urology
    |December 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Investigating bladder electrical activity in cats and baboons revealed that only a narrow 10-40 Hz frequency band represents genuine electromyogram (EMG) signals related to bladder function, distinguishing it from artifactual noise.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Pelvic floor muscle training in spinal cord injury and its impact on neurogenic detrusor over-activity and incontinence.

    Spinal cord·2015
    Same author

    Light touch and pin prick disparity in the International Standard for Neurological Classification of Spinal Cord Injury (ISNCSCI).

    Spinal cord·2013
    Same author

    Action of 5 Hz repetitive transcranial magnetic stimulation on sensory, motor and autonomic function in human spinal cord injury.

    Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology·2011
    Same author

    Development of quantitative and sensitive assessments of physiological and functional outcome during recovery from spinal cord injury: a clinical initiative.

    Brain research bulletin·2010
    Same author

    Geochemistry of mineral licks at Loskop Dam Nature Reserve, Mpumalanga, South Africa.

    Environmental geochemistry and health·2010
    Same author

    A controlled environment chamber (T).

    British journal of pharmacology·2008
    Same journal

    Removal of ureteric calculus by the ureteric corkscrew in a case of calculous anuria.

    British journal of urology·2010
    Same journal

    Obstructive anuria, probably due to calculus.

    British journal of urology·2010
    Same journal

    The incidence of signs of renal injury following prolonged burial under debris in an unselected series of 764 airraid casualties admitted to hospital.

    British journal of urology·2010
    Same journal

    Contribution to the etiology of acquired fibrosis of the bladder neck.

    British journal of urology·2010
    Same journal

    True infective abacterial pyuria.

    British journal of urology·2010
    Same journal

    A malignant right kidney removed at operation, together with a short length of the vena cava.

    British journal of urology·2010
    See all related articles

    Area of Science:

    • Urology
    • Neuroscience
    • Physiology

    Background:

    • Bladder electrical activity is complex and difficult to interpret.
    • Distinguishing genuine electromyogram (EMG) signals from artifact is crucial for understanding bladder function.

    Purpose of the Study:

    • To characterize the nature of bladder electrical activity.
    • To identify the frequency bands corresponding to genuine EMG signals during bladder function.
    • To differentiate true EMG from artifactual signals.

    Main Methods:

    • Electrical activity was recorded from the bladders of anesthetized cats and one baboon.
    • Sacral ventral root stimulation was used to elicit responses.
    • Analysis focused on time-locked muscle responses and their relation to intravesical pressure changes.

    Related Experiment Videos

  • Frequency band analysis was employed to isolate specific signal components.

    • Main Results:

    • A time-locked muscle response to stimulation was most evident in the 10-40 Hz frequency band.
    • This 10-40 Hz activity preceded increases in intravesical pressure.
    • During reflex voiding, only activity within the 10-40 Hz band correlated consistently with voiding and pre-voiding contractions.
    • A wide band of recorded electrical activity contained significant artifact.

    Conclusions:

    • Only a small portion of the recorded bladder electrical activity represents true EMG.
    • The 10-40 Hz frequency band is likely the most reliable indicator of genuine bladder EMG.
    • This frequency band appears to exclude the majority of artifactual signals, aiding in accurate interpretation of bladder function.