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Administration of L-dopa or apomorphine to neonatal and adult 6-hydroxydopamine (6-OHDA)-treated rats resulted in different behavioral responses depending on the age at which dopaminergic fibers were destroyed. When neonatal 6-OHDA-treated rats were tested as adults, they exhibited marked stereotypies, self-biting and self-mutilation behavior (SMB) when(More)
In rats, bilateral injection of muscimol (30-60 ng/site) into the medial substantia nigra zona reticulata exerted an antinociceptive effect in the hotplate and tail-flick tests. Injections of muscimol into the substantia nigra also induced intense stereotyped behavior and self-injurious behavior (SIB). Tail-flick and hindpaw-lick responses were inhibited(More)
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