research over the past decade suggests that the principal sulcus accomplishes its regulatory functions by its interconnections with ( 1 ) the posterior parietal cortex which provides it with access to visuo-spatial data , ( 2 ) the parahippocampal gyrus and subiculum which allows information to be held 'on line ' and deposited in long-term storage , and ( 3 ) motor centers such as the basal ganglia , deep layers of the superior colliculus and several premotor areas that control head , eye and hand movements .
C0018670
head
C0015392
eye