The researchers detected changes in the levels of dopamine a thousand times faster than had previously been recorded in humans.
New York: Scientists have
reported first-ever measurements of a key neurotransmitter involved in
learning with unprecedented precision in the brains of people with
Parkinson's disease.
The measurements, collected during brain surgery as the conscious
patients played an investment game, demonstrate how rapid dopamine
release encodes information crucial for human choice.
The findings may have widespread implications not just for Parkinson's
disease but for other neurological and psychiatric disorders as well,
including depression and addiction, researchers from Virginia Tech
Carilion Research Institute noted.
The researchers detected changes in the levels of dopamine a thousand times faster than had previously been recorded in humans.
These rapid measurements, combined with enhanced chemical specificity,
led the scientists to discover that dopamine - a crucial
neurotransmitter involved in learning and decision-making - has a far
more complex role than formerly thought.
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