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Titolo:
Stimulus-response incompatibility activates cortex proximate to three eye fields
Autore:
Merriam, EP; Colby, CL; Thulborn, KR; Luna, B; Olson, CR; Sweeney, JA;
Indirizzi:
Univ Pittsburgh, Dept Neurosci, Pittsburgh, PA 15213 USA Univ Pittsburgh Pittsburgh PA USA 15213 eurosci, Pittsburgh, PA 15213 USA Univ Pittsburgh, Dept Psychiat, Pittsburgh, PA 15213 USA Univ Pittsburgh Pittsburgh PA USA 15213 sychiat, Pittsburgh, PA 15213 USA Univ Pittsburgh, Dept Radiol, Ctr Neural Basis Cognit, Pittsburgh, PA 15213 USA Univ Pittsburgh Pittsburgh PA USA 15213 Cognit, Pittsburgh, PA 15213 USA
Titolo Testata:
NEUROIMAGE
fascicolo: 5, volume: 13, anno: 2001,
pagine: 794 - 800
SICI:
1053-8119(200105)13:5<794:SIACPT>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON-EMISSION-TOMOGRAPHY; POSTERIOR PARIETAL CORTEX; FRONTAL-LOBE LESIONS; WORKING-MEMORY; SEQUENTIAL-PROCEDURES; FUNCTIONAL-ANATOMY; SUSTAINED ACTIVITY; PREFRONTAL CORTEX; BRAIN ACTIVATION; RHESUS-MONKEY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
40
Recensione:
Indirizzi per estratti:
Indirizzo: Merriam, EP 115 Mellon Inst,4400 5th Ave, Pittsburgh, PA 15213 USA 115 Mellon Inst,4400 5th Ave Pittsburgh PA USA 15213 5213 USA
Citazione:
E.P. Merriam et al., "Stimulus-response incompatibility activates cortex proximate to three eye fields", NEUROIMAGE, 13(5), 2001, pp. 794-800

Abstract

We used functional magnetic resonance imaging (fMRI) to investigate cortical activation during the performance of three oculomotor tasks that impose increasing levels of cognitive demand. (1) In a visually guided saccade (VGS) task, subjects made saccades to hashed targets. (2) In a compatible task, subjects made leftward and rightward saccades in response to foveal presentation of the uppercase words "LEFT" or "RIGHT. " (3) In a mixed task, subjects made rightward saccades in response to the lowercase word "left" and leftward saccades in response to the lowercase word "right" on incompatible trials (60%). The remaining 40% of trials required compatible responses to uppercase words. The VGS and compatible tasks, when compared to fixation, activated the three cortical eye fields: the supplementary eye field (SEF), the frontal eye field (FEF), and the parietal eye field (PEF). The mixed task, when compared to the compatible task, activated three additional cortical regions proximate to the three eye fields: (1) rostral to the SEF in medial frontal cortex; (2) rostral to the FEF in dorsolateral prefrontal cortex (DLPFC); (3) rostral and lateral to the PEF in posterior parietal cortex. These areas may contribute to the suppression of prepotent responses and in holding novel visuomotor associations in working-memory. (C) 2001 Academic Press.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 18/01/20 alle ore 02:30:53