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Titolo:
Pyriform cortex beta-waves: odor-specific sensitization following repeatedolfactory stimulation
Autore:
Vanderwolf, CH; Zibrowski, EM;
Indirizzi:
Univ Western Ontario, Dept Psychol, London, ON N6A 5C2, Canada Univ Western Ontario London ON Canada N6A 5C2 London, ON N6A 5C2, Canada Univ Western Ontario, Grad Program Neurosci, London, ON N6A 5C2, Canada Univ Western Ontario London ON Canada N6A 5C2 London, ON N6A 5C2, Canada Univ Western Ontario, Dept Epidemiol & Biostat, London, ON N6A 5C2, CanadaUniv Western Ontario London ON Canada N6A 5C2 London, ON N6A 5C2, Canada
Titolo Testata:
BRAIN RESEARCH
fascicolo: 2, volume: 892, anno: 2001,
pagine: 301 - 308
SICI:
0006-8993(20010223)892:2<301:PCBOSF>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
RABBIT FOLLOWING STIMULATION; LONG-LASTING POTENTIATION; ANTERIOR PIRIFORM CORTEX; SYNAPTIC TRANSMISSION; PLANT ANTIFEEDANT; PERFORANT PATH; SNOWSHOE HARES; DENTATE GYRUS; RAT; PREDATOR;
Keywords:
antifeedant; beta-wave; electroencephalographic wave; neural plasticity; olfaction; pyriform cortex; sensitization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Vanderwolf, CH Univ Western Ontario, Dept Psychol, London, ON N6A 5C2, Canada Univ Western Ontario London ON Canada N6A 5C2 5C2, Canada
Citazione:
C.H. Vanderwolf e E.M. Zibrowski, "Pyriform cortex beta-waves: odor-specific sensitization following repeatedolfactory stimulation", BRAIN RES, 892(2), 2001, pp. 301-308

Abstract

The first exposure to the odors of carbon tetrachloride. isopentenyl methyl sulfide, methyl ethyl ketone. 3-propylthietane, salicylaldehyde, toluene,2,4,5-trimethyl thiazoline, or xylene elicits a weakly developed 20 Hz wave response (beta -waves) in central olfactory structures in the rat. Repeated presentations of these odors produces a gradual enhancement or sensitization of olfactory beta -waves over 5-10 trials given in 1-3 min. The odors of 2-aminoacetophenone and 2-hydroxyacetophenone produce sensitization after an average of 15-17 presentations. The sensitized beta -wave response to the odors of 2-propylthietane and xylene persists for at least 5 days and probably much longer. Sensitization to one odor transfers partially or not at all to other novel odors even though repeated presentation of the new odor also produces sensitization. Since the initial negative response of the olfactory mucosa (presumably due to receptor depolarization) is not enhancedby repeated olfactory stimulation, it is presumed that the altered responsivity is due to synaptic changes in central olfactory structures such as the olfactory bulb or pyriform cortex. Finally, data are presented to show that behavioral antifeedant activity by an odorant does not invariably mean that the odorant has the ability to elicit an olfactory beta -wave response. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 15:11:04