Does depression show up on a brain scan?

The decrease in brain activity observed in depressed individuals is thought to be caused by changes in neurotransmitter levels and neural connectivity. This altered brain activity can have profound effects on mood, behavior, and cognitive function.

A PET scan is a powerful diagnostic tool that can provide valuable insights into brain function. One of its applications is in comparing brain activity during different emotional states, such as depression and normalcy.

During a PET scan, the brain is exposed to a radioactive tracer that is absorbed by active brain cells. The tracer emits gamma rays, which are detected by a special camera and used to create images of brain activity.

When comparing brain activity during depression and normalcy, the PET scan reveals distinct differences in color patterns. Specifically, areas of decreased brain activity in depressed individuals appear as increased blue and green colors, while normal brain activity appears as white and yellow.

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