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Titolo:
EEC THETA-OSCILLATIONS AND FRONTAL ALPHA-OSCILLATIONS DURING AUDITORYPROCESSING CHANGE WITH AGING
Autore:
YORDANOVA JY; KOLEV VN; BASAR E;
Indirizzi:
UNIV LUBECK,INST PHYSIOL,RATZEBURGER ALLEE 160 D-23538 LUBECK GERMANY UNIV LUBECK,INST PHYSIOL D-23538 LUBECK GERMANY BULGARIAN ACAD SCI,INST PHYSIOL BU-1113 SOFIA BULGARIA
Titolo Testata:
Electroencephalography and clinical neurophysiology. Evoked potentials
fascicolo: 5, volume: 108, anno: 1998,
pagine: 497 - 505
SICI:
0168-5597(1998)108:5<497:ETAFAD>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; DEVELOPMENTAL-CHANGES; 3-YEAR-OLD CHILDREN; EVOKED-POTENTIALS; AGE; P300; RHYTHMICITIES; MODALITY; RHYTHMS; MEMORY;
Keywords:
BRAIN OSCILLATIONS; MIDDLE AGE; AUDITORY EVOKED POTENTIAL; SINGLE SWEEP ANALYSIS; PHASE LOCKING; FRONTAL ALPHA RHYTHM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
56
Recensione:
Indirizzi per estratti:
Citazione:
J.Y. Yordanova et al., "EEC THETA-OSCILLATIONS AND FRONTAL ALPHA-OSCILLATIONS DURING AUDITORYPROCESSING CHANGE WITH AGING", Electroencephalography and clinical neurophysiology. Evoked potentials, 108(5), 1998, pp. 497-505

Abstract

The present study assessed the effect of age on time and frequency components of auditory evoked potentials in two groups of adults, young (18-30 years old) and middle-aged (50-55 years old). Averaged and single-sweep potentials were analyzed. Analysis of single alpha and theta responses was performed for 3 parameters - single-sweep amplitude, phase-locking, and enhancement. Significant age differences were revealedonly at the level of single sweeps: (i) at the :3 mid-lice locations (Fz, Ct, and Pt), middle-aged adults manifested theta phase-locking and enhancement which were significantly stronger than those in young adults; and (ii) in contrast, only over the frontal brain area were the alpha responses stronger in phase-locking and enhancement in the middle-aged than in young subjects. Thus, the analysis of frequency responses at the level of single sweeps enabled us to reveal age differences in simple auditory stimulus processing that were otherwise not detectable in the averaged potential. The results imply that the alpha response system may relate to frontal brain functioning during aging. (C) 1998 Elsevier Science ireland Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 09:33:30