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Location matters

Desire and dread are separated by just a few millimeters in the brain

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4:19pm, July 8, 2008

Dopamine conducts a frenzied song of craving at one end of a tiny brain region and a panic-stricken hymn at the other. Depending on where along the length of the region the neurotransmitter is triggered, it elicits emotions ranging from desire to disgust, a new study shows.

“The roles [of dopamine] may be partitioned, and perhaps defined, by anatomy,” comments Emily Hueske, a neuroscientist at the Massachusetts Institute of Technology.

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