sentence: For examples , in addition to the targets listed above : ( i ) DA neurons of the SNc also innervate cortical and limbic regions ; ( ii ) dopaminergic VTA neurons project to both the ventral striatum and the ventral-medial aspects of the head of the caudate-putamen ; and ( iii ) the A8 cell group , which forms the dorsal and caudal expansion of the A9 cell group , contains cells that project into striatal , limbic , and cortical regions ( Bentivoglio and Morelli , 2005 ; Bj ö rklund and Dunnett , 2007 ) .