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Titolo:
Age-related changes in regional brain activation during phonological decoding and printed word recognition
Autore:
Simos, PG; Breier, JI; Fletcher, JM; Foorman, BR; Mouzaki, A; Papanicolaou, AC;
Indirizzi:
Univ Texas, Sch Med, Dept Neurosurg, Vivian L Smith Ctr Neurol Res, Houston, TX 77030 USA Univ Texas Houston TX USA 77030 ith Ctr Neurol Res, Houston, TX 77030 USA Univ Texas, Sch Med, Dept Pediat, Houston, TX 77030 USA Univ Texas Houston TX USA 77030 h Med, Dept Pediat, Houston, TX 77030 USA
Titolo Testata:
DEVELOPMENTAL NEUROPSYCHOLOGY
fascicolo: 2, volume: 19, anno: 2001,
pagine: 191 - 210
SICI:
8756-5641(2001)19:2<191:ACIRBA>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; LANGUAGE-SPECIFIC CORTEX; DYSLEXIC-CHILDREN; ORGANIZATION; MAGNETOENCEPHALOGRAPHY; MECHANISMS; CHILDHOOD; TASK; MEG;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Citazioni:
36
Recensione:
Indirizzi per estratti:
Indirizzo: Simos, PG Univ Texas, Sch Med, Dept Neurosurg, Vivian L Smith Ctr Neurol Res, 6431 Fannin St,Suite 7-154, Houston, TX 77030 USA Univ Texas 6431 Fannin St,Suite 7-154 Houston TX USA 77030 0 USA
Citazione:
P.G. Simos et al., "Age-related changes in regional brain activation during phonological decoding and printed word recognition", DEV NEUROPS, 19(2), 2001, pp. 191-210

Abstract

Using magnetic source imaging, age-related changes in spatiotemporal brainactivation profiles associated with printed word recognition and phonological decoding (pseudoword reading) were examined in 27 adults and 22 children without reading problems. Adults showed a distinct spatiotemporal profileduring reading of both types of print consisting of bilateral activation of occipital cortices, followed by strongly left-predominant activation of basal temporal regions, and, finally, left hemisphere temporoparietal (including the angular gyrus) and inferior frontal activation. Children lacked the clear temporal distinction in the engagement of basal and temporoparietalareas and displayed significantly weaker activation of the left inferior frontal gyrus. In addition, the consistent hemispheric asymmetries in the degree of activation of basal temporal regions that were present in the adultreaders were not apparent in the children. In contrast, the strong left hemisphere preponderance in the degree of activation of temporoparietal areaswas present in children as well as adults, regardless of the type of printthey were asked to read. The data suggest that the degree of specialization of cortical regions for reading, as well as the pattern of regional interactions that supports this specialization, may change with age.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/06/20 alle ore 23:43:57