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Titolo:
Visual motion processing investigated using contrast agent-enhanced fMRI in awake behaving monkeys
Autore:
Vanduffel, W; Fize, D; Mandeville, JB; Nelissen, K; Van Hecke, P; Rosen, BR; Tootell, RBH; Orban, GA;
Indirizzi:
Katholieke Univ Leuven, Neuro & Psychofysiol Lab, Louvain, Belgium Katholieke Univ Leuven Louvain Belgium ychofysiol Lab, Louvain, Belgium UZ Gasthuisberg, Afdeling Radiol, B-3000 Louvain, Belgium UZ GasthuisbergLouvain Belgium B-3000 g Radiol, B-3000 Louvain, Belgium Massachusetts Gen Hosp, NMR Ctr, Charlestown, MA 02129 USA Massachusetts Gen Hosp Charlestown MA USA 02129 Charlestown, MA 02129 USA
Titolo Testata:
NEURON
fascicolo: 4, volume: 32, anno: 2001,
pagine: 565 - 577
SICI:
0896-6273(20011120)32:4<565:VMPIUC>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
SUPERPARAMAGNETIC IRON-OXIDE; CEREBRAL BLOOD-VOLUME; FRONTAL EYE FIELD; AREA MT; MACAQUE MONKEY; EXTRASTRIATE CORTEX; RESPONSE PROPERTIES; FUNCTIONAL-ANALYSIS; INTRAPARIETAL AREA; HUMAN BRAIN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
61
Recensione:
Indirizzi per estratti:
Indirizzo: Vanduffel, W Katholieke Univ Leuven, Neuro & Psychofysiol Lab, Campus Gasthuisberg,Herestr 49, Louvain, Belgium Katholieke Univ Leuven Campus Gasthuisberg,Herestr 49 Louvain Belgium
Citazione:
W. Vanduffel et al., "Visual motion processing investigated using contrast agent-enhanced fMRI in awake behaving monkeys", NEURON, 32(4), 2001, pp. 565-577

Abstract

To reduce the information gap between human neuroimaging and macaque physiology and anatomy, we mapped fMRI signals produced by moving and stationarystimuli (random dots or lines) in fixating monkeys. Functional sensitivitywas increased by a factor of similar to5 relative to the BOLD technique byinjecting a contrast agent (monocrystalline iron oxide nanoparticle [MION]). Areas identified as motion sensitive included V2, V3, MT/V5, vMST, FST, VIP, and FEF (with moving dots), as well as V4, TE, LIP, and PIP (with random lines). These regions sensitive for moving dots are largely in agreementwith monkey single unit data and (except for V3A) with human fMRI results. Moving lines activate some regions that have not been previously implicated in motion processing. Overall, the results clarify the relationship between the motion pathway and the dorsal stream in primates.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 06:43:10