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Titolo:
Structure-function spatial covariance in the human visual cortex
Autore:
Hasnain, MK; Fox, PT; Woldorff, MG;
Indirizzi:
Univ Texas, Hlth Sci Ctr, Res Imaging Ctr, San Antonio, TX 78229 USA Univ Texas San Antonio TX USA 78229 maging Ctr, San Antonio, TX 78229 USA Univ Texas, Hlth Sci Ctr, Dept Physiol, San Antonio, TX 78229 USA Univ Texas San Antonio TX USA 78229 pt Physiol, San Antonio, TX 78229 USA Univ Texas, Hlth Sci Ctr, Dept Radiol, San Antonio, TX 78229 USA Univ Texas San Antonio TX USA 78229 ept Radiol, San Antonio, TX 78229 USA Univ Texas, Hlth Sci Ctr, Dept Med Neurol, San Antonio, TX 78229 USA Univ Texas San Antonio TX USA 78229 Med Neurol, San Antonio, TX 78229 USA Univ Texas, Hlth Sci Ctr, Dept Psychiat, San Antonio, TX 78229 USA Univ Texas San Antonio TX USA 78229 t Psychiat, San Antonio, TX 78229 USA
Titolo Testata:
CEREBRAL CORTEX
fascicolo: 8, volume: 11, anno: 2001,
pagine: 702 - 716
SICI:
1047-3211(200108)11:8<702:SSCITH>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITRON EMISSION TOMOGRAPHY; HUMAN CEREBRAL-CORTEX; HUMAN STRIATE CORTEX; HUMAN-BRAIN; BLOOD-FLOW; INTERSUBJECT VARIABILITY; INTRAVENOUS (H2O)-O-15; SULCAL VARIABILITY; MIGRATING NEURONS; CALLOSAL AXONS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
61
Recensione:
Indirizzi per estratti:
Indirizzo: Fox, PT Univ Texas, Hlth Sci Ctr, Res Imaging Ctr, 7703 Floyd Curl Dr,MSC 6240, San Antonio, TX 78229 USA Univ Texas 7703 Floyd Curl Dr,MSC 6240 San Antonio TX USA 78229 SA
Citazione:
M.K. Hasnain et al., "Structure-function spatial covariance in the human visual cortex", CEREB CORT, 11(8), 2001, pp. 702-716

Abstract

The value of sulcal landmarks for predicting functional areas was quantitatively examined, Medial occipital sulci were identified using anatomical magnetic resonance images to create individual cortical-surface models. Functional visual areas were identified using retinotopically organized visual stimuli, and positron emission tomography subtraction imaging with intra-subject averaging, Functional areas were assigned labels by placement along the cortical surface from V1. Structure-function spatial covariances between sulci and functional areas, and spatial covariances among functional areas,were determined by projecting sulcal landmarks and functional areas into astandardized stereotaxic space and computing the 'r' statistics. A functional area was considered to spatially covary with a sulcus or another functional area if their geometric centers correlated significantly (P < 0.05) intwo or more axes, Statistically significant spatial covariances were foundfor some, but not all comparisons. The finding of significant spatial covariances within a standardized stereotaxic space indicates that nine-parameter spatial normalization does not account for all the predictive value of structural or functional locations, and may be improved upon by using selected sulcal and functional landmarks. The present findings quantify for the first time the strength of structure-function spatial covariance and commentdirectly on developmental theories addressing the etiology of structure-function correspondence.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 09:14:43