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Titolo:
Oxygenation of the cat primary visual cortex
Autore:
Padnick, LB; Linsenmeier, RA; Goldstick, TK;
Indirizzi:
Northwestern Univ, Dept Biomed Engn, Evanston, IL 60208 USA Northwestern Univ Evanston IL USA 60208 omed Engn, Evanston, IL 60208 USA Northwestern Univ, Dept Chem Engn, Evanston, IL 60208 USA Northwestern Univ Evanston IL USA 60208 Chem Engn, Evanston, IL 60208 USA Northwestern Univ, Dept Neurobiol & Physiol, Evanston, IL 60208 USA Northwestern Univ Evanston IL USA 60208 & Physiol, Evanston, IL 60208 USA Northwestern Univ, Inst Neurosci, Evanston, IL 60208 USA Northwestern Univ Evanston IL USA 60208 Neurosci, Evanston, IL 60208 USA
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 5, volume: 86, anno: 1999,
pagine: 1490 - 1496
SICI:
8750-7587(199905)86:5<1490:OOTCPV>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLOOD-FLOW; SPONTANEOUS FLUCTUATIONS; CEREBRAL-CORTEX; GERBIL BRAIN; HIPPOCAMPUS; TENSION; TISSUE; RAT; PO2;
Keywords:
intracortical oxygen tension; brain;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Linsenmeier, RA NorthwesternSAniv, Dept Biomed Engn, 2145 Sheridan Rd, Evanston, IL 60208 U Northwestern Univ 2145 Sheridan Rd Evanston IL USA 60208 U
Citazione:
L.B. Padnick et al., "Oxygenation of the cat primary visual cortex", J APP PHYSL, 86(5), 1999, pp. 1490-1496

Abstract

Tissue PO2 was measured in the primary visual cortex of anesthetized, artificially ventilated normovolemic cats to examine tissue oxygenation with respect to depth. The method utilized 1) a chamber designed to maintain cerebrospinal fluid pressure and prevent ambient PO2 from influencing the brain,2) a microelectrode capable of recording electrical activity as well as local PO2, and 3) recordings primarily during electrode withdrawal from the cortex rather than during penetrations. Local peaks in the PO2 profiles wereconsistent with the presence of numerous vessels. Excluding the superficial 200 mu m of the cortex, in which the ambient PO2 may have influenced tissue PO2, there was a slight decrease (4.9 Torr/mm cortex) in PO2 as a function of depth. After all depths and cats were weighted equally, the average PO2 in six cats was 12.8 Torr, with approximately one-half of the values being less than or equal to 10 Torr. The kurtosis of the PO2 histogram, with all depths and cats weighted equally, was 3.61, and the skewness was 1.70.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 07:28:56