Ontogeny of apomorphine-induced stereotypy and its D1 and D2 receptor mediation in rats depleted of dopamine as neonates.


The ontogeny of apomorphine-induced stereotypy in rats treated with 6-OHDA (100 micrograms) or its vehicle on postnatal Day 3 was determined on Days 6, 21, or 60-90. Stereotypic sniffing and mouthing behavior were produced by apomorphine in control and DA-depleted animals as early as Day 6. Animals depleted of DA as neonates exhibited supersensitivity to… (More)


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