brainstem

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brainstem

[′brān‚stem]
(anatomy)
The portion of the brain remaining after the cerebral hemispheres and cerebellum have been removed.
References in periodicals archive ?
The future goal of this work is to devise a test to identify infants with a serotonin brainstem defect early, and to develop preventive treatments that would correct the serotonin deficiency.
In 2006, Kinney and colleagues showed that SIDS is associated with abnormalities in the number of cells and receptors related to serotonin in the brainstem, but it wasn't clear whether SIDS may be caused by overproduction or underproduction of the chemical.
Walking-like activity could also be initiated by exposing the lower brainstem to blue light, demonstrating that excitatory cells in the brainstem provide a sufficient 'go' signal to the spinal neurons involved in walking.
As each pup was born, the researchers removed the animal's brainstem and spinal cord and kept that tissue alive for 3 days.
A developmental anomaly in an area of the brainstem that may sense carbon dioxide in the blood and that may help regulate respiration appears to be the physiologic root of at least some cases of sudden infant death syndrome, Dr.
The researchers studied binding patterns for six neurotransmitter systems in 19 brainstem locations, comparing SIDS cases against the non-SIDS controls.
But neither should one falsely minimize the functional capacity of those anencephalic infants with relatively intact brainstems.
Concerning those with more intact brainstems, it simply begs the question to state categorically that they lack conscious awareness because they lack cerebral hemispheres.
The investigators reported that treating the PBC in rodent brainstems with a drug called riluzole didn't alter the recorded respiratory rhythm.
This brainstem area, called the pre-Botzinger complex, appears to drive both the normal, quiet breathing pattern and more complicated breathing actions such as sighs and gasps.