“…In the striatum, aripiprazole appears to act as a D2 receptor antagonist, since by microiontophoretic application it inhibited spikes elicited by stimulation of the pars compacts of substantia nigra; this effect was also observed with domperidone and halop- eridol (12,16). In neurons where nigral stimulation-induced spikes were inhibited by aripiprazole, the inhibition by DA of glutamate-induced firing was also blocked by this drug.…”