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Titolo:
Projections from the amygdalo-piriform transition area to the amygdaloid complex: A PHA-L study in rat
Autore:
Jolkkonen, E; Miettinen, R; Pitkanen, A;
Indirizzi:
Univ Kuopio, AI Virtanen Inst Mol Sci, Epilepsy Res Lab, FIN-70211 Kuopio,Finland Univ Kuopio Kuopio Finland FIN-70211 y Res Lab, FIN-70211 Kuopio,Finland Univ Kuopio, Dept Neurol & Neurosci, FIN-70211 Kuopio, Finland Univ Kuopio Kuopio Finland FIN-70211 Neurosci, FIN-70211 Kuopio, Finland Kuopio Univ Hosp, Dept Neurol, FIN-70211 Kuopio, Finland Kuopio Univ HospKuopio Finland FIN-70211 rol, FIN-70211 Kuopio, Finland
Titolo Testata:
JOURNAL OF COMPARATIVE NEUROLOGY
fascicolo: 4, volume: 432, anno: 2001,
pagine: 440 - 465
SICI:
0021-9967(20010416)432:4<440:PFTATA>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHASEOLUS-VULGARIS-LEUKOAGGLUTININ; ENTORHINAL CORTEX; TOPOGRAPHIC ORGANIZATION; INTRINSIC CONNECTIONS; HIPPOCAMPAL-FORMATION; BASOLATERAL AMYGDALA; CORTICAL AFFERENTS; SEPTOTEMPORAL AXIS; EXTENDED AMYGDALA; TEMPORAL CORTEX;
Keywords:
amygdala; emotion; gustatory; hippocampus; memory; olfactory;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
62
Recensione:
Indirizzi per estratti:
Indirizzo: Pitkanen, A Univ Kuopio, AI Virtanen Inst Mol Sci, Epilepsy Res Lab, POB 1627, FIN-70211 Kuopio, Finland Univ Kuopio POB 1627 Kuopio Finland FIN-70211 Kuopio, Finland
Citazione:
E. Jolkkonen et al., "Projections from the amygdalo-piriform transition area to the amygdaloid complex: A PHA-L study in rat", J COMP NEUR, 432(4), 2001, pp. 440-465

Abstract

The amygdalo-piriform transition area is a poorly defined region in the temporal lobe that is heavily connected with the olfactory system. As part ofan ongoing project aimed at understanding the neuronal pathways that provide sensory information to the amygdala, we investigated the cytoarchitectonic and chemoarchitectonic features of the amygdalo-piriform transition areaand its connections to the amygdaloid complex in 13 rats by using the anterograde tracer, Phaseolus vulgaris-leucoagglutinin. Our analysis indicates that the amygdalo-piriform transition area has medial (rostral and caudal portions) and lateral parts. The rostromedial part projects heavily to the intermediate and lateral divisions of the central nucleus, whereas the caudomedial part projects mainly to the medial division. The lateral part of theamygdalo-piriform transition area projects heavily to the capsular and lateral divisions of the central nucleus. Electron microscopic analysis revealed that the projection to the lateral division of the central nucleus formsasymmetric contacts with the spines and shafts of postsynaptic neurons and, therefore, is assumed to be excitatory. The amygdalo-piriform transition area also projects moderately to other amygdaloid nuclei, including the parvicellular division of the basal nucleus, the anterior cortical nucleus, and the nucleus of the lateral olfactory tract. The lateral and medial parts of the amygdalo-piriform transition area also project to the distal temporal CA1 and distal temporal subiculum, respectively. Unlike the adjacent entorhinal cortex, the amygdalo-piriform transition area does not project to the dentate gyrus. These data suggest that the amygdalo-piriform transition area is a region that influences both emotional and memory processing in parallel by means of pathways to the amygdala and the hippocampus, respectively. (C) 2001 Wiley-Liss, Inc.

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Documento generato il 03/04/20 alle ore 11:04:57