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Titolo:
INTERAURAL TIME AND LEVEL DIFFERENCES - INTEGRATED OR SEPARATED PROCESSING
Autore:
SCHROGER E;
Indirizzi:
UNIV MUNICH,INST PSYCHOL,LEOPOLDSTR 13 D-80802 MUNICH GERMANY
Titolo Testata:
Hearing research
fascicolo: 1-2, volume: 96, anno: 1996,
pagine: 191 - 198
SICI:
0378-5955(1996)96:1-2<191:ITALD->2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
EVENT-RELATED POTENTIALS; AUDITORY SENSORY MEMORY; MISMATCH NEGATIVITY; HUMAN-BRAIN; STIMULUS DEVIANCE; COMPLEX SOUND; PITCH CHANGES; RESPONSES; CORTEX; ATTENTION;
Keywords:
SPATIAL HEARING; INTERAURAL CUE; AUDITORY EVOKED POTENTIAL; MISMATCH NEGATIVITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
53
Recensione:
Indirizzi per estratti:
Citazione:
E. Schroger, "INTERAURAL TIME AND LEVEL DIFFERENCES - INTEGRATED OR SEPARATED PROCESSING", Hearing research, 96(1-2), 1996, pp. 191-198

Abstract

The processing of interaural differences in time (IDT) and sound pressure level (IDL) was studied by using the mismatch negativity auditoryevoked potential (MMN), which is a probe of pre-attentive auditory sensory memory. In a passive oddball experiment, subjects were reading in a book while they were presented with a standard stimulus (P = 0.88)having no IDTs or IDLs and three different deviant stimuli revealing an IDT, IDL, or both IDT and IDL. The different deviants elicited MMNsof comparable latencies indicating that memory representations of theIDTs and IDLs have been established. The MMN amplitudes to the IDT-IDL deviant were larger than those to changes in either IDT or IDL only. Moreover, the time-courses, amplitudes, and topographies of the MMNs to the IDT-IDL deviants were very similar to the sum of the MMNs elicited by the IDT and IDL deviants. These findings suggest that the representations of the binaural location cues were (at least partly) processed in parallel. It is argued that separate azimuth representations exist for IDT and IDL at a cortical level.

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Documento generato il 22/01/20 alle ore 18:41:23