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A, B, Schematic representation of GABA (A) and glutamate (B) concentrations in sensorimotor and associative-limbic striatal territories during the normal, symptomatic, and recovery states. Results for the five monkeys (mean ± SEM) are shown for the motor symptom and recovery states, represented by a vertical bar. All concentrations are expressed as a percentage of the basal level (set at 100%) which is represented by a dotted line. **p < 0.01 versus the normal state.
