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Titolo:
DEOXYGLUCOSE UPTAKE IN THE FERRET AUDITORY-CORTEX
Autore:
WALLACE MN; ROEDA D; HARPER MS;
Indirizzi:
UNIV ABERDEEN,MARISCHAL COLL,DEPT BIOMED SCI ABERDEEN AB9 1AS SCOTLAND UNIV ABERDEEN,DEPT BIOMED PHYS ABERDEEN AB25 2ZD SCOTLAND
Titolo Testata:
Experimental Brain Research
fascicolo: 3, volume: 117, anno: 1997,
pagine: 488 - 500
SICI:
0014-4819(1997)117:3<488:DUITFA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
CEREBRAL GLUCOSE-UTILIZATION; GERBIL MERIONES-UNGUICULATUS; MUSTELA-PUTORIUS; FUNCTIONAL-ORGANIZATION; RAT-BRAIN; 2-DEOXYGLUCOSE; CONNECTIONS; PATHWAY; AUTORADIOGRAPHY; FIELDS;
Keywords:
AUDITORY SYSTEM; NEOCORTEX; 2-DEOXYGLUCOSE AUTORADIOGRAPHY; DEAFNESS; CHEMOARCHITECTONIC AREAS; FERRET;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
M.N. Wallace et al., "DEOXYGLUCOSE UPTAKE IN THE FERRET AUDITORY-CORTEX", Experimental Brain Research, 117(3), 1997, pp. 488-500

Abstract

Histological methods and 2-deoxyglucose autoradiography were used in an attempt at finding distinguishing characteristics that would permitthe clear definition of different auditory areas on the ectosylvian gyrus. This region was studied in both coronal and flattened tangentialsections. In tangential sections a crescent-shaped region of high deoxyglucose uptake was identified. The centre of this crescent was in the position of the primary auditory area on the middle ectosylvian gyrus. The ventro-anterior arm of the crescent was on the surface of the anterior ectosylvian gyrus and the ventro-posterior arm on the posterior ectosylvian gyrus. All three parts of the crescent appear to have anauditory function, because ablating the inferior colliculus or inserting a contralateral earplug reduced their deoxyglucose uptake. This was shown by using two separately distinguishable forms of 2-deoxyglucose, incorporating the F-18 and C-14 isotopes. In addition, another areaof high deoxyglucose activity was identified in the ventral wall of the suprasylvian sulcus, which seems to correspond to the anterior auditory field. These four areas with high deoxyglucose uptake also have high levels of succinate dehydrogenase activity and moderately high densities of myelinated fibres. Succinate dehydrogenase histochemistry provides a simple method for identifying auditory cortical areas and should be of use in future physiological studies. These results provide evidence that the ferret has four separate auditory areas with relatively high metabolic and functional activity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 10:03:48