?url_ver=Z39.88-2004&rft_id=PQ+ETD%3A591363&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Ash&rft.aufirst=E.S.&rft.au=Ash%2C+E.S.&rft.tpages=255&rft.title=An+investigation+of+the+neurochemical+mechanisms+underlying+the+contrasting+effects+of+d-amphetamine+in+two+subregions+of+the+rat+anterior+cingulate+cortex.&rft.date=2007&rft.degree=Doctoral&rft.inst=University+of+London