These findings of early neurophysiological development in the
parasubiculum and presubiculum, spacial areas of the brain, underpin Haag's [8] concept of lateralization.
The hippocampus, however, is not a homogeneous structure but consists of several histologically and functionally distinct but tightly interconnected subfields: the subiculum with the subdivisions presubiculum,
parasubiculum, and subiculum proper; the four cornu ammonis sectors (CA1-4); and the dentate gyrus (DG) [196].
Redish and Touretzky (1997) have Suggested that the path integration is accomplished by an anatomical loop that includes the hippocampus, the subiculum, the
parasubiculum and the entorhinal cortex.