Research article summary (published Dec 2002):

Temporal resolution of the human primary auditory cortex in gap detection.

Full Abstract

The temporal resolution of the primary auditory cortex was studied by recording the magnetic middle latency fields (MAEF) evoked by gaps of 3, 6 and 9 ms inserted in the middle of 600 ms broadband noise bursts. Spatio-temporal source modelling showed that a significant neural representation as reflected by MAEF responses is present at gap durations as low as 3 sms. The comparison of the MAEF waveforms elicited by the onset, gap and offset of the noise bursts indicates that the gap related response near threshold is largely determined by the onset to the burst following the gap. The electro-physiologically derived minimum detectable gap closely resembled the psychoacoustic threshold of 2.0 ms obtained in the same subjects.

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Author information

Author/s: Rupp, André (A); Gutschalk, Alexander (A); Hack, Sebastian (S); Scherg, Michael (M);

Affiliation: Section of Biomagnetism, Department of Neurology, Im Neuenheimer Feld 400, University Hospital of Heidelberg, Germany. andre.rupp(-atsign-)urz.uni-heidelberg.de

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: Neuroreport (Neuroreport), published in England. (Language: eng)

Reference: 2002-Dec; vol 13 (issue 17) : pp 2203-7

Dates: Created 2002/12/18; Completed 2003/04/15; Revised 2006/11/15;

PMID: 12488797, status: MEDLINE (last retrieval date: 12/26/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Acoustic Stimulation Adolescent Adult Auditory Cortex - physiology Auditory Pathways - physiology Auditory Perception - physiology Auditory Threshold - physiology Evoked Potentials, Auditory - physiology

Evoked Potentials, Auditory - physiology Female Functional Laterality - physiology Humans Magnetoencephalography Male Reaction Time - physiology Time Perception - physiology

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