Abstract
This study images dopamine release in response to a neurochemically specific challenge with the psychostimulant drug methylphenidate. Changes in synaptic dopamine induced by methylphenidate were evaluated with positron emission tomography and [11C]raclopride, a D2 receptor radioligand that is sensitive to endogenous dopamine. Methylphenidate significantly decreased striatal [11C]raclopride binding. The decrease was variable and was negatively correlated with age. Mood and anxiety at baseline, were also correlated with methylphenidate‐induced DA changes. This strategy provides a tool to investigate the responsiveness of the dopamine system in the normal and diseased human brain and to investigate the neurochemical correlates of behavior. © 1994 Wiley‐Liss, Inc.
Original language | English (US) |
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Pages (from-to) | 255-262 |
Number of pages | 8 |
Journal | Synapse |
Volume | 16 |
Issue number | 4 |
DOIs | |
State | Published - Apr 1994 |
Externally published | Yes |
Keywords
- Methylphenidate
- Positron emission tomography
- Receptors
- Synapse
- [C]‐Raclopride
ASJC Scopus subject areas
- Cellular and Molecular Neuroscience