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Titolo:
THE AEP T-COMPLEX TO SYNTHESIZED MUSICAL TONES - LEFT-RIGHT ASYMMETRYIN RELATION TO HANDEDNESS AND HEMISPHERE DOMINANCE
Autore:
JONES SJ; BYRNE C;
Indirizzi:
NATL HOSP NEUROL & NEUROSURG,DEPT CLIN NEUROPHYSIOL,QUEEN SQ LONDON WC1N 3BG ENGLAND
Titolo Testata:
Electroencephalography and clinical neurophysiology. Evoked potentials
fascicolo: 4, volume: 108, anno: 1998,
pagine: 355 - 360
SICI:
0168-5597(1998)108:4<355:TATTSM>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUDITORY EVOKED-POTENTIALS; EVENT-RELATED POTENTIALS; SPEECH-PERCEPTION; HAND DOMINANCE; TEMPORAL-LOBE; N1 WAVE; BRAIN; MEMORY; PITCH; DISCRIMINATION;
Keywords:
AUDITORY EVOKED POTENTIAL; COMPLEX TONE; CORTICAL LATERALIZATION; HANDEDNESS; HEMISPHERE DOMINANCE; T-COMPLEX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
36
Recensione:
Indirizzi per estratti:
Citazione:
S.J. Jones e C. Byrne, "THE AEP T-COMPLEX TO SYNTHESIZED MUSICAL TONES - LEFT-RIGHT ASYMMETRYIN RELATION TO HANDEDNESS AND HEMISPHERE DOMINANCE", Electroencephalography and clinical neurophysiology. Evoked potentials, 108(4), 1998, pp. 355-360

Abstract

Auditory evoked potentials were recorded to onset and offset of synthesised instrumental tones in 40 normal subjects, 20 right-handed for writing and 20 left-handed. The majority of both groups showed a T-complex which was larger at the right temporal electrode (T4) than the left (T3). In the T4-T3 difference waveforms, the mean potential between latencies of 130 and 165 ms was negative in all right-handed subjects except two for whom the waveforms were marginally positive-going. Amongst the left-handers, however, this converse asymmetry was seen in 7 subjects, 5 of them more than 2 standard deviations from the mean of the right-handed group. The degree of asymmetry was not significantly correlated with the degree of left-handedness according to the EdinburghHandedness Inventory. Asymmetry of the T-complex to instrumental tones appears to reflect the lateralisation of auditory 'musical' processing in the temporal cortex, confirming evidence from other sources including PET that this is predominantly right-sided in the majority of individuals. The proportion of left-handers showing the converse laterality is roughly in accordance with those likely to be right-hemisphere-dominant for language. If linguistic and 'musical' processes are consistently located in opposite hemispheres, AEPs to complex tones may prove a useful tool in establishing functional lateralisation. (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 12:44:16