39 The nucleus accumbens (NAc) has been shown to play a key role in the brain’s response to methylphenidate 40 (MPD). The present study focuses on neuronal recording from this structure. The study postulates that repetitive 41 exposure to the same dose of MPD will elicit in some rats behavioral sensitization and in others tolerance. 42 Furthermore, the study postulates that NAc neuronal activit...

compound n2, n3, n7, n8, 1, 4, 5, 6, 9, 10-decaphenyltetradecahydrodipyrazino [2, 3-b: 2, 3-e] pyrazine-2, 3, 7, 8-tetraamine (4) was prepared by condensation of 1, 1′, 2, 2′-tetrakis (phenylamino) ethane (1d) and glyoxal in etoh or i-proh. also, reaction of 1d with glyoxal in equimolare in etoh resulted 5,6-bis (ethoxy)-n2, n3, 1, 4-tetraphenylhexahydro-2, 3-pyrazinediamine (5). the natures of...