SCN organization reconsidered.

摘要: The SCN has long had organizational schemas imposed on it. In most, the is dichotomized, with one region typically associated presence of vasopressin cells and other containing vasoactive intestinal polypeptide certain afferent terminal fields. If assumed to be accurate, that have been intended simplify conceptually organize known anatomy may actually interfere understanding how various cell types input pathways contribute circadian rhythm regulation. This review describes inadequacies existing notes several practical difficulties undermine their usefulness. These include “static” versus “dynamic” anatomy, generalizations about organization in relation plane or level section, concept differential density, all which a view substantially more complex than depicted oversimplified line drawings. need for accurate topographical d...