Sensitization to apomorphine, effects of dizocilpine NMDA receptor blockades.

The dopamine agonist apomorphine (apo) elicits bouts of stereotyped pecking in pigeons, a response which increases with successive apo injections. This sensitization is strongly context-specific and has been suggested to arise through a Pavlovian conditioning to both external and internal cues. We hypothetized that this learning involves dopamino… CONTINUE READING