大鼠颗粒状和颗粒减少的岛叶皮质中皮质味觉区的差异发育。

Differential development of cortical taste areas in granular and dysgranular insular cortices in rats.

作者信息

Ogawa H, Ohgushi M, Hasegawa K, Murayama N

机构信息

Department of Physiology, Kumamoto University Medical School, Japan.

出版信息

Brain Res Dev Brain Res. 1991 Jun 21;60(2):271-4. doi: 10.1016/0165-3806(91)90057-p.

DOI:10.1016/0165-3806(91)90057-p

PMID:1893569

Abstract

Recordings were made from taste neurons in granular and dysgranular areas of the insular cortex of anesthetized SD-rats from the age of 4 days to over 90 days (adults). Almost all of the taste neurons were detected in the dysgranular area prior to weaning, but the number in the granular area increased with age and exceeded the number in the dysgranular area after the age of 50 days. In the dysgranular area, most taste neurons, irrespective of the postnatal age, were located at layer 5. However, in the granular area they were found at a deeper layer, with the advance in age; e.g. layer 2-3 at 14-20 days to layer 5 in adults. Thus, taste afferents in granular and dysgranular areas of the insular cortex differ with advance in age.

摘要

对4日龄至90日龄以上（成年）的麻醉SD大鼠岛叶皮质颗粒区和颗粒减少区的味觉神经元进行记录。断奶前，几乎所有味觉神经元都在颗粒减少区被检测到，但颗粒区的神经元数量随年龄增加，在50日龄后超过了颗粒减少区的数量。在颗粒减少区，无论出生后年龄如何，大多数味觉神经元都位于第5层。然而，在颗粒区，随着年龄增长，它们位于更深的层；例如，14 - 20日龄时在第2 - 3层，成年后在第5层。因此，岛叶皮质颗粒区和颗粒减少区的味觉传入神经随年龄增长而有所不同。