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Titolo:
Human auditory middle latency responses: influence of stimulus type and intensity
Autore:
Borgmann, C; Ross, B; Draganova, R; Pantev, C;
Indirizzi:
Univ Munster, Inst Expt Audiol, Ctr Biomagnetism, D-48129 Munster, GermanyUniv Munster Munster Germany D-48129 magnetism, D-48129 Munster, Germany
Titolo Testata:
HEARING RESEARCH
fascicolo: 1-2, volume: 158, anno: 2001,
pagine: 57 - 64
SICI:
0378-5955(200108)158:1-2<57:HAMLRI>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVOKED MAGNETIC-FIELDS; SOURCE LOCALIZATION; TONE-PIPS; COMPONENTS; CORTEX; ORGANIZATION; POTENTIALS; FREQUENCY; NEURONS;
Keywords:
middle latency response; human auditory cortex; evoked magnetic field; amplitude; latency; intensity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
26
Recensione:
Indirizzi per estratti:
Indirizzo: Pantev, C Univ Munster, Inst Expt Audiol, Ctr Biomagnetism, Kardinal von Galen Ring 10, D-48129 Munster, Germany Univ Munster Kardinal von Galen Ring10 Munster Germany D-48129
Citazione:
C. Borgmann et al., "Human auditory middle latency responses: influence of stimulus type and intensity", HEARING RES, 158(1-2), 2001, pp. 57-64

Abstract

Human auditory middle latency responses (MLR) to click and tone pip stimuli of different intensities were recorded by means of magnetoencephalography(MEG) and electroencephalography (EEG). Clicks elicited larger responses with significantly shorter latencies than the tone pips at the same intensity in dB sensation level (SL). Most MLR amplitudes increased and their latencies decreased with increasing stimulus intensity for both types of stimulation. Pa and Nb amplitudes saturated at intensities of 60 dB SL in the caseof click stimulation. The shorter latencies of MLR evoked by the click were explained by its short rise time and the high frequency content of its spectrum. MEG source analysis yielded MLR sources which were clearly different from those of the slow cortical wave N1. They seem to be located in primary auditory areas along Heschl's gyrus. (C) 2001 Elsevier Science B.V. 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 21:49:31