amygdalohippocampal area

amygdalohippocampal area (AHA)

The term amygdalohippocampal area refers to a histologically defined part of the amygdala (MG). All authors regard it as occupying the caudal third of the AMG, which abuts the hippocampal complex (HPC). In the human ( Mai-1997 ) and the macaque ( Amaral-1992 ) it is located close to the medial surface of the ventroanterior limbic lobe (LLB). It is bounded internally by the posterior periamygdalar cortex (COAp) and the temporal horn of the lateral ventricle. In the rat ( Swanson-2004 ) and mouse ( Hof-2000 ,) it is bounded largely by the COAp and the accessory basal nucleus (known as the basomedial nucleus of the amygdala in rodents); the stria terminalis separates it from the ventricle. According to some authors the amygdalohippocampal area extends anteriorly to occupy the caudal half of the amygdala. These authors divide the area into two or three parts, which in the human ( Olmos-2004 ), the rat ( Paxinos-2009b ), and the mouse ( Franklin-2008 ) are named on the basis of location: anterolateral, posterolateral and posteromedial parts. In the macaque ( Paxinos-2009a ) the rostral portion of the area is divided into two parts on the basis of cellular morphology: magnocellular and parvicellular parts. Some authors refer to the area in rodents as the 'posterior periamygdalar cortex' ( Swanson-2004; Hof-2000 ).

Also known as: posterior nucleus amygdala, amygdalohippocampal area, Area amygdalohippocampalis, amygdalohippocampal transition area, Area periamygdalae caudalis ventralis, amygdalo-hippocampal area, hippocampal-amygdaloid transition area

NeuroNames ID: 2028

All Names & Sources

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Showing 13 synonym(s) - Use arrows to navigate

Showing 13 synonym(s)

Name:

posterior nucleus amygdala

Language:

English

Organism:

rat

Source:

Swanson-1998

Citation:

Second Revised Edition, Elsevier Science, Amsterdam, 1998

Source Title:

Brain Maps: Structure of the Rat Brain

Name:

amygdalohippocampal area

Language:

English

Organism:

human

Source:

Amaral-1990

Citation:

Chapter 21, pp. 711-756 in The Human Nervous System, G. Paxinos (ed.), Academic Press, San Diego, 1990

Source Title:

Hippocampal Formation

Name:

amygdalohippocampal area

Language:

English

Organism:

Macaca fascicularis

Source:

Amaral-1992

Citation:

Chapter 1, pp. 1-66 in The Amygdala: Neurobiological Aspects of Emotion, Memory, and Mental Dysfunction, Aggleton, J.P. (ed),Wiley-Liss, New York, 1992

Source Title:

Anatomical organization of the primate amygdaloid complex

Name:

Area amygdalohippocampalis

Language:

Latin

Organism:

human

Source:

Mai-1997

Citation:

San Diego: Academic Press, 1997

Source Title:

Atlas of the Human Brain

Name:

amygdalohippocampal transition area

Language:

English

Organism:

human

Source:

Mai-1997

Citation:

San Diego: Academic Press, 1997

Source Title:

Atlas of the Human Brain

Name:

Area periamygdalae caudalis ventralis

Language:

Latin

Organism:

human

Source:

Olmos-1990

Citation:

Chapter 20, pp. 583-710 in The Human Nervous System, G. Paxinos (Ed.), Academic Press, San Diego, 1990

Source Title:

Amygdala

Name:

amygdalohippocampal transition area

Language:

English

Organism:

human

Source:

Olmos-1990

Citation:

Chapter 20, pp. 583-710 in The Human Nervous System, G. Paxinos (Ed.), Academic Press, San Diego, 1990

Source Title:

Amygdala

Name:

amygdalo-hippocampal area

Language:

English

Organism:

Unspecified

Source:

Stoeckert-2005

Citation:

Computational Biology and Informatics Laboratory, University of Pennsylvania, Philadelphia, PA, 2005

Source Title:

Controlled Vocabularies

Name:

AHi

Language:

acronym

Organism:

Macaca mulatta

Source:

Paxinos-2009a

Citation:

Amsterdam: Elsevier-Academic Press. 2009

Source Title:

The Rhesus Monkey Brain, Second Edition

Name:

AHA

Language:

acronym

Organism:

macaque

Source:

Amaral-1992

Citation:

Chapter 1, pp. 1-66 in The Amygdala: Neurobiological Aspects of Emotion, Memory, and Mental Dysfunction, Aggleton, J.P. (ed),Wiley-Liss, New York, 1992

Source Title:

Anatomical organization of the primate amygdaloid complex

Name:

AMGhpp

Language:

acronym

Organism:

Unspecified

Source:

NeuroNames

Citation:

University of Washington, Seattle, WA

Source Title:

NeuroNames

Name:

HATA

Language:

acronym

Organism:

macaque

Source:

Rosene-1987

Citation:

Chapter 9 in Cerebral Cortex: Further Aspects of Cortical Function, Including Hippocampus, EG Jones and A Peters (Eds.), Volume Six, Plenum Press, New York, 1987

Source Title:

The Hippocampal Formation of the Primate Brain: A review of Some Comparative Aspects of Cytoarchitecture and Connections.

Name:

hippocampal-amygdaloid transition area

Language:

English

Organism:

macaque

Source:

Rosene-1987

Citation:

Chapter 9 in Cerebral Cortex: Further Aspects of Cortical Function, Including Hippocampus, EG Jones and A Peters (Eds.), Volume Six, Plenum Press, New York, 1987

Source Title:

The Hippocampal Formation of the Primate Brain: A review of Some Comparative Aspects of Cytoarchitecture and Connections.

Illustrations

Showing 1 illustration(s)

multiple views of
3D reconstruction in
Macaca mulatta

Species With The Structure

Equivalent By	Human	Macaque	Rat	Mouse
Internal Structure	Has The Structure	Has The Structure	Relevant Data Not Located	Relevant Data Not Located

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Showing 6 record(s) - Use arrows to navigate

Showing 6 record(s)

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

amygdalohippocampal area

Source:

Amaral-1990

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

amygdalohippocampal transition area

Source:

Olmos-1990

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

amygdalohippocampal transition area

Source:

Mai-1997

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Area amygdalohippocampalis

Source:

Mai-1997

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Homo sapiens (human)

Their Name:

Area periamygdalae caudalis ventralis

Source:

Olmos-1990

Basis:

Internal Structure

Has Equivalent:

Yes

Organism:

Macaca fascicularis (Macaca fascicularis)

Their Name:

amygdalohippocampal area

Source:

Amaral-1992

Models Where It Appears

Functional CNS Model - Rat

The Functional CNS Model - Rat (FMrat) ( Swanson-2004) is one of three hierarchical models representing the internal organization of the central nervous system (CNS). The others are the Structural CNS Model - Human (SThmn) and the Functional CNS Model - Human (FMhmn). The FMrat model represents the basic organization of the mouse ( Hof-2000 AMBA-2024 ) and, presumably, other rodents. Functional CNS models differ from structural models in that structures are defined and named by connectivity rather than by proximity to other structures at the same level. Functional models are more useful for representing longitudinal components of are grouped based on information drawn from multiple neuroscientific disciplines. such as connections, neurochemical characteristics, and role in physiogical and behavioral processes. While the Functional Model was developed primarily for an atlas of the rat brain ( Swanson-2004 ), the hierarchical organization of structures is for the most part applicable to the human, macaque, mouse and other mammalian brains as well. Structures at lower levels of the Functional CNS hierarchy are largely the same as in the Classical and Developmental Models, i.e., they were originally identified by stains for gray matter (Nissl substance) and white matter (myelin). At the next higher level they are grouped into basic connectional and functional systems of the CNS, such as the subcortical sensory systems, the brainstem motor system and the behavioral state system. At the highest levels CNS structures are grouped on the basis of dissection and embryologic precursors into cerebrum ( cerebral cortex and cerebral nuclei ), cerebellum, and cerebrospinal trunk.

gray matter (central nervous system gray matter)

cerebrum

pallium (Cerebral cortex (pallium))

cerebral cortex (cortical plate)

cortical subplate nuclei

layer 6b (layer 6b, isocortex)

claustrum

endopiriform nucleus (endopiriform claustrum)

lateral amygdalar nucleus

basolateral amygdalar nucleus

accessory basal nucleus (basomedial amygdalar nucleus)

amygdalohippocampal area

dorsal cap of the nucleus of the lateral olfactory tract (nucleus of the lateral olfactory tract, dorsal cap)

cerebral nuclei

cerebellum

cerebrospinal trunk

white matter (basic fiber systems)

cerebral ventricles (ventricular system)