Brain When Hearing
by Dr John Mazziotta Et Al/neurology/science Photo Library
Title
Brain When Hearing
Artist
Dr John Mazziotta Et Al/neurology/science Photo Library
Medium
Photograph - Photograph
Description
Positron computed tomography (PCT) scans of the brain, showing the results of 4 types of auditory stimulation. PCT scans depend on the brain's use of glucose to fuel its activity. A volunteer is injected with a minute dose of a radioactive tracer chemical that binds to glucose molecules in the blood. The glucose tends to concentrate in parts of the brain where there is increased activity (cerebral metabolism), & is detected by the emission of positron radioactivity from the tracer. The resulting signals are processed by computer to give maps which show which parts of the brain are most active.
Uploaded
February 22nd, 2021
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