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Titolo:
Voltage-sensitive dye versus intrinsic signal optical imaging: comparison of optically determined functional maps from rat barrel cortex
Autore:
Takashima, I; Kajiwara, R; Iijima, T;
Indirizzi:
Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan Natl InstAdv Ind Sci & Technol Tsukuba Ibaraki Japan 3058568 8568, Japan Tohoku Univ, Dept Dev Biol & Neurosci, Sendai, Miyagi 980, Japan Tohoku Univ Sendai Miyagi Japan 980 & Neurosci, Sendai, Miyagi 980, Japan
Titolo Testata:
NEUROREPORT
fascicolo: 13, volume: 12, anno: 2001,
pagine: 2889 - 2894
SICI:
0959-4965(20010917)12:13<2889:VDVISO>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
SOMATOSENSORY CORTEX; CORTICAL ACTIVITY; SINGLE-VIBRISSA; VISUAL-CORTEX; IN-VITRO; STIMULATION; WHISKER; RESPONSES; REPRESENTATION; CONNECTIONS;
Keywords:
barrel cortex; blood deoxyhemoglobin concentration; cerebral blood volume; intrinsic optical signal; metabolic activity; neural activity; optical imaging; voltage-sensitive dye;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Takashima, I Natl Inst Adv Ind Sci & Technol, 1-1-1 Umezono, Tsukuba, Ibaraki 3058568, Japan Natl Inst Adv Ind Sci & Technol 1-1-1 Umezono Tsukuba Ibaraki Japan 3058568
Citazione:
I. Takashima et al., "Voltage-sensitive dye versus intrinsic signal optical imaging: comparison of optically determined functional maps from rat barrel cortex", NEUROREPORT, 12(13), 2001, pp. 2889-2894

Abstract

Using intrinsic and voltage-sensitive dye optical imaging methods, somatosensory-evoked neural activity and the consequent metabolic activity were visualized in the barrel cortex at high temporal and spatial resolution. We compared maps of neural and metabolic activity from the perspective of spatial distribution in the cortex. There was good agreement between the two functional maps, if the extent of metabolic activity before a prominent increase in cerebral blood volume (CBV) was assessed. This result indicates that oxygen consumption occurs before CBV changes, in approximately the same cortical area as that in which the preceding neural activity was evoked. This also suggests that the intrinsic signal reflects subthreshold synaptic activity, as well as spiking activity, which is similar to the dye-related signals. NeuroReport 12:2889-2894 (C) 2001 Lippincott Williams & Wilkins.

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Documento generato il 21/01/20 alle ore 07:37:07