University of California, San Diego.
J Cogn Neurosci. 1989 Fall;1(4):291-301. doi: 10.1162/jocn.1989.1.4.291.
In the nonmammalian telencephalon, there are neuronal populations corresponding to cell groups in the neocortex of mammals in terms of connections, single unit-responses, chemical content, and functions. Some of these populations in nonmammals, however, are organized in a nonlaminar, rather than laminar fashion. These observations may prompt a reassessment of the functional roles of lamination and the evolutionary origins of the mammalian neocortex. Thus, the role of neural circuits and laminar organization can be differentiated in order to understand the cognitive functions of the neocortex. Moreover, the origins of neocortex can be separable into the precursors of nonlaminar and laminar regions.
在非哺乳动物的端脑中，存在着与哺乳动物新皮层细胞群相对应的神经元群体，无论是在连接、单细胞反应、化学组成还是功能方面均是如此。然而，这些非哺乳动物的某些神经元群体并非以层状方式组织，而是以非层状方式组织。这些观察结果可能促使人们重新评估分层的功能作用以及哺乳动物新皮层的进化起源。因此，可以区分神经回路和分层组织的作用，以了解新皮层的认知功能。此外，新皮层的起源可以分为非层状和层状区域的前体。
