Asset Details
Do you wish to reserve the book?
An fMRI study of the role of suprapontine brain structures in the voluntary voiding control induced by pelvic floor contraction
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
An fMRI study of the role of suprapontine brain structures in the voluntary voiding control induced by pelvic floor contraction
Do you wish to request the book?
An fMRI study of the role of suprapontine brain structures in the voluntary voiding control induced by pelvic floor contraction
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
An fMRI study of the role of suprapontine brain structures in the voluntary voiding control induced by pelvic floor contraction
2005
Overview
We have learned that micturition is comprised of two basic phases: storage and emptying; during bladder emptying, the pontine and periaqueductal gray (PAG) micturition center ensures coordinated inhibition of striated sphincter and pelvic floor muscles and relaxation of the internal urethral sphincter while the detrusor muscle contracts. Due to several disorders of the brain and spinal cord, the achieved voluntary control of bladder function can be impaired, and involuntary mechanisms of bladder activation again become evident. However, little has been discovered so far how higher brain centers strictly regulate the intricate process of micturition.
The present functional magnetic resonance imaging (fMRI) study attempted to identify brain areas involved in such voluntary control of the micturition reflex by performing functional magnetic resonance imaging during a block design experiment in 12 healthy subjects. The protocol consisted of alternating periods of rest and pelvic muscle contraction during empty-bladder condition (EBC) and full-bladder condition (FBC). Repeated pelvic floor muscle contractions were performed during full bladder to induce a stronger contrast of bladder sensation, desire to void and inhibition of the micturition reflex triggering, since the subjects were asked not to urinate. Empty-bladder conditions were applied as control groups. Activation maps calculated by contrast of subtracting the two different conditions were purposed to disclose these brain areas that are involved during the inhibition of the micturition reflex, in which contrast, the SMA, bilateral putamen, right parietal cortex, right limbic system, and right cerebellum were found activated. The combined activation of basal ganglia, parietal cortex, limbic system, and cerebellum might support the assumption that a complex visceral sensory–motor program is involved during the inhibitory control of the micturition reflex.
Publisher
Elsevier Inc,Elsevier Limited
Subject
/ Bladder
/ Brain
/ Complex visceral sensory–motor program
/ Dominance, Cerebral - physiology
/ Empty- and full-bladder conditions
/ Humans
/ Image Processing, Computer-Assisted
/ Isometric Contraction - physiology
/ Male
/ Neural Inhibition - physiology
/ NMR
/ Periaqueductal Gray - physiology
/ Periaqueductal gray micturition center
/ Scanners
/ Studies
