The nicotinic α4β2 receptor selective agonist, TC-2559, increases dopamine neuronal activity in the ventral tegmental area of rat midbrain slices - Chen, Ying; Sharples, Thomas J.W.; Phillips, Keith G.; Benedetti, Giovanni; Broad, Lisa M.; Zwart, Ruud; Sher, Emanuele (Neuropharmacology, 2003)