Macroscopic morphology of the subcallosal area in man and in comparative anatomy studies
Stańczyk, J.L.
Folia Morphologica 41(4): 429-439
1982
ISSN/ISBN: 0015-5659 PMID: 6820651 Document Number: 185460
Repeated differences in the subcallosalarea of the human cerebral hemispheres were noted. Four most often repeating types of this structure were distinguished. Their shape was conditioned by the presence or the absence of the anterior parolfactory sulcus. In the comparative observations, the lack of the anterior parolfactory sulcus was stated in adult Prosimiae and monkeys, while in human fetuses this sulcus was varied. The beginning of its development was observed in older fetuses. If often appeared as the independent sulcus, or the lengthening of the sulcus cinguli in the ventral direction. In other cases, it could be identified with 1 of 2 rostral sulci, most often with the ventral one. A great variability of the subcallosal area shape in humans was probably connected with the increased twisting of the medial frontal cortex and its greatest macroscopic differentiation among all the Primates.