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Titolo:
EVIDENCE FOR SPATIO-TOPIC ORGANIZATION OF BINAURAL PROCESSING IN THE HUMAN BRAIN-STEM
Autore:
POLYAKOV A; PRATT H;
Indirizzi:
TECHNION ISRAEL INST TECHNOL,EVOKED POTENTIALS LAB,GUTWIRTH BLDG IL-32000 HAIFA ISRAEL TECHNION ISRAEL INST TECHNOL,EVOKED POTENTIALS LAB IL-32000 HAIFA ISRAEL
Titolo Testata:
Hearing research
fascicolo: 1-2, volume: 94, anno: 1996,
pagine: 107 - 115
SICI:
0378-5955(1996)94:1-2<107:EFSOOB>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUDITORY EVOKED-POTENTIALS; STEM RESPONSES ABRS; INTERAURAL TIME; INTENSITY DIFFERENCES; TRAPEZOID BODY; GUINEA-PIGS; CAT; GENERATION; STIMULI; LESIONS;
Keywords:
BINAURAL INTERACTION; AUDITORY BRAIN-STEM EVOKED POTENTIAL; INTERAURAL TIME AND INTENSITY DIFFERENCE; SOUND LATERALIZATION; 3-CHANNEL LISSAJOUS TRAJECTORY; SPATIO-TOPIC ORGANIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
41
Recensione:
Indirizzi per estratti:
Citazione:
A. Polyakov e H. Pratt, "EVIDENCE FOR SPATIO-TOPIC ORGANIZATION OF BINAURAL PROCESSING IN THE HUMAN BRAIN-STEM", Hearing research, 94(1-2), 1996, pp. 107-115

Abstract

Three-channel Lissajous' trajectories (3-CLT) of the binaural interaction (BI) in auditory brainstem evoked potentials (ABEP) were derived from 13 normally and symmetrically hearing adults by subtracting the response to binaural clicks from the algebraic sum of monaural responses. ABEPs wen recorded from four channels, three of them orthonormal toeach other, in response to alternating polarity clicks, presented at a rate of 11/s with interaural time differences (ITD) of 0.2, 0.4 and 1.0 ms and an intensity of 65 dB nHL, or isochronic to both ears with interaural intensity differences (IIDs) of 5, 10 and 15 dB (65 dB nHL /- 2.5, 5.0 and 7.5 dB, respectively). All 3-CLTs included 6 planar segments (labeled Bd(I), Bd(II), Bd(III), Be-I, Be-II and Bf). Amplitudes of 3-CLT BI components were not significantly affected by increasing ITDs and IIDs, but latencies of all components increased significantly. The most remarkable finding was a significant change in apex orientations of Be-I and Be-II of the BI 3-CLT across stimulus conditions. The changes in B-I and Be-II apex orientations, across stimulus conditions, may reflect differences in the anatomical representation of activity evoked by differently lateralized sounds. We suggest that this may indicate spatio-topic organization in the human brainstem.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 19/01/20 alle ore 09:51:21