Year: 2013
Type: article
Abstract: covered an almond-shaped mass of gray matter in the anterior portion of the mam-malian temporal lobe, which he called “amygdala ” (Burdach, 1819–1822). The first anatomical description of the amyg-dala was made in 1867 by Meynert (1867). Subsequently, a large number of other nuclei were added to the amygdala to con-stitute what is now known as the “amyg-daloid complex ” (AC) (Johnston, 1923). Until this day, AC remains a subject of intense investigation in terms of content and evolutionary development since it is a much more complicated structure than what was previously thought. It is there-fore, important to know the evolutionary developmental origin of AC before we can completely understand its function. The AC is a multinuclear complex comprised of 13 nuclei. These nuclei are divided into three major groups: the basolateral, cortical-like, and centro-medial. Other accessory nuclei such as the intercalated cell masses (I) and the amygdalo-hippocampus area have also been described. The basolateral group is comprised of the lateral nucleus (LA), basal nucleus (B), and accessory basal nucleus (AB) (Johnston, 1923). The cortical-like group of nuclei includes the nucleus of the lateral olfactory tract (NLOT), bed nucleus of the accessory olfactory tract (BAOT), anterior and posterior cortical nuclei (CoA and CoP, respectively), and periamygdaloid cortex (PAC). The centromedial nucleus con-sists of the central nucleus (CeA), medial nucleus (M), and amygdaloid part of the bed nucleus of stria terminalis (BST). The major remaining groups of AC are the amygdalohippocampal area (AHA) and intercalated nuclei (I) (Aggleton, 2000; Sah et al., 2003). These different nuclei of AC are connected within and also with various brain regions, and thus, process various types of information (e.g., olfactory and
Source: Frontiers in Neuroanatomy
Author: Mohan Pabba
Institutions: University of Ottawa, Ottawa Hospital Research Institute
Language: English
Topic: Memory and Neural Mechanisms
Subfield: Cognitive Neuroscience
Field: Neuroscience
Domain: Life Sciences
Open Access status: gold
Estimated APC paid: $3,801
OpenAlex ID: W2172124312