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Titolo:
Three-dimensional estimation of the distribution and size of putative functional units in rat gustatory cortex as assessed from the inter-neuronal distance between two neurons with correlative activity
Autore:
Yokota, T; Satoh, T;
Indirizzi:
Aichi Gakuin Univ, Sch Dent Med, Dept Physiol, Nagoya, Aichi 464037, JapanAichi Gakuin Univ Nagoya Aichi Japan 464037 , Nagoya, Aichi 464037, Japan
Titolo Testata:
BRAIN RESEARCH BULLETIN
fascicolo: 5, volume: 54, anno: 2001,
pagine: 575 - 584
SICI:
0361-9230(20010315)54:5<575:TEOTDA>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
CAT VISUAL-CORTEX; CROSS-CORRELATION ANALYSIS; CORTICAL-NEURONS; SOLITARY TRACT; TASTE-QUALITY; PARABRACHIAL NUCLEUS; STRIATE CORTEX; BEHAVING RATS; RESPONSES; INFORMATION;
Keywords:
taste; gustatory stimulation; cross-correlation; taste profile; temporal pattern;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Yokota, T Aichi Gakuin Univ, Sch Dent Med, Dept Physiol, 1-100 Kusumoto Cho, Nagoya,Aichi 464037, Japan Aichi Gakuin Univ 1-100 Kusumoto Cho Nagoya Aichi Japan 464037 n
Citazione:
T. Yokota e T. Satoh, "Three-dimensional estimation of the distribution and size of putative functional units in rat gustatory cortex as assessed from the inter-neuronal distance between two neurons with correlative activity", BRAIN RES B, 54(5), 2001, pp. 575-584

Abstract

Two neurons recorded simultaneously in rat gustatory cortex often show, when the oral mucosa is stimulated with effective taste solutions, correlative activities (CAs), which can be quantified with a cross-correlation technique. It has been suggested that the CAs are involved in taste quality discrimination and the neuron pairs with CA (CA pairs) may function as a unit (putative functional unit). The present experiment was undertaken (1) to determine the three-dimensional size of putative functional units in rat gustatory cortex on the basis of the interneuronal distance (IND) in individual CA pairs, and (2) to examine to what extent the CA is related to the intrapair similarity in taste responses. The findings were as follows: (1) The CAsoccurred in 30 out of 55 pairs with INDs less than or equal to 270 mum andoften at INDs < 100 mum. (2) The numbers of putative functional units werecalculated tentatively by using the longest or the mean INDs; at least 200or over 4,000 units, respectively. (3) In the CA pairs, the "best taste" was identical (homo-type) in many pairs, the "taste profiles" were often similar, and the temporal courses of taste responses resembled each other in more than one half of the pairs. A possible role of hetero-type pairs was discussed. (4) In a small number of cases, troughs were observed in the CCs, suggesting the involvement of local inhibitory neurons. In conclusion we point out that nearby neurons are prone to CA, if (1) their best tastes are identical, (2) their taste profiles are similar, and (3) the temporal patterns of taste response resemble each other. (C) 2001 Elsevier Science Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 01:08:29