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Titolo:
Local and global attention are mapped retinotopically in human occipital cortex
Autore:
Sasaki, Y; Hadjikhani, N; Fischl, B; Liu, AK; Marret, S; Dale, AM; Tootell, RBH;
Indirizzi:
Massachusetts Gen Hosp, Dept Radiol, NMR Ctr, Charlestown, MA 02129 USA Massachusetts Gen Hosp Charlestown MA USA 02129 Charlestown, MA 02129 USA
Titolo Testata:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
fascicolo: 4, volume: 98, anno: 2001,
pagine: 2077 - 2082
SICI:
0027-8424(20010213)98:4<2077:LAGAAM>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
HUMAN VISUAL-CORTEX; SURFACE-BASED ANALYSIS; HUMAN CEREBRAL-CORTEX; SPATIAL-FREQUENCY; SELECTIVE ATTENTION; FUNCTIONAL-ANALYSIS; CORTICAL SURFACE; HEMISPHERIC-SPECIALIZATION; CONTRAST SENSITIVITY; MAGNIFICATION FACTOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Sasaki, Y Massachusetts Gen Hosp, Dept Radiol, NMR Ctr, 149 13th St, Charlestown, MA02129 USA Massachusetts Gen Hosp 149 13th St Charlestown MA USA 02129 USA
Citazione:
Y. Sasaki et al., "Local and global attention are mapped retinotopically in human occipital cortex", P NAS US, 98(4), 2001, pp. 2077-2082

Abstract

Clinical evidence suggests that control mechanisms for local and global attention are lateralized in the temporal-parietal cortex. However, in the human occipital (visual) cortex, the evidence for lateralized local/global attention is controversial. To clarify this matter, we used functional MRI tomap activity in the human occipital cortex, during local and global attention, with sustained visual fixation. Data were analyzed in a flattened cortical format, relative to maps of retinotopy and spatial frequency peak tuning, Neither local nor global attention was lateralized in the occipital cortex, Instead, local attention and global attention appear to be special cases of visual spatial attention, which are mapped consistently with the mapsof retinotopy and spatial frequency tuning, in multiple visual cortical areas.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 22:04:03