Functional localization of auditory cortical fields of human: click-train stimulation

John F Brugge; Igor O Volkov; Hiroyuki Oya; Hiroto Kawasaki; Richard A Reale; Albert Fenoy; Mitchell Steinschneider; Matthew A Howard III

doi:10.1016/j.heares.2007.11.012

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Functional localization of auditory cortical fields of human: click-train stimulation

Journal article

Peer reviewed

Functional localization of auditory cortical fields of human: click-train stimulation

John F Brugge, Igor O Volkov, Hiroyuki Oya, Hiroto Kawasaki, Richard A Reale, Albert Fenoy, Mitchell Steinschneider and Matthew A Howard III

Hearing research, Vol.238(1-2), pp.12-24

04/2008

DOI: 10.1016/j.heares.2007.11.012

PMCID: PMC5605818

PMID: 18207680

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Abstract

Averaged auditory evoked potentials (AEPs) to bilaterally presented 100 Hz click trains were recorded from multiple sites simultaneously within Heschl's gyrus (HG) and on the posterolateral surface of the superior temporal gyrus (STG) in epilepsy-surgery patients. Three auditory fields were identified based on AEP waveforms and their distribution. Primary (core) auditory cortex was localized to posteromedial HG. Here the AEP was characterized by a robust polyphasic low-frequency field potential having a short onset latency and on which was superimposed a smaller frequency-following response to the click train. Core AEPs exhibited the lowest response threshold and highest response amplitude at one HG site with threshold rising and amplitude declining systematically on either side of it. The AEPs recorded anterolateral to the core, if present, were typically of low amplitude, with little or no evidence of short-latency waves or the frequency-following response that characterized core AEPs. We suggest that this area is part of a lateral auditory belt system. Robust AEPs, with waveforms demonstrably different from those of the core or lateral belt, were localized to the posterolateral surface of the STG and conform to previously described field PLST.

Time Factors

Acoustic Stimulation

Auditory Cortex - physiopathology

Humans

Epilepsy - surgery

Reaction Time

Brain Mapping - methods

Epilepsy - physiopathology

Evoked Potentials, Auditory

Details

Title: Subtitle: Functional localization of auditory cortical fields of human: click-train stimulation
Creators: John F Brugge - Department of Neurosurgery, University of Iowa College of Medicine, Iowa City, IA 52242, USA. Brugge@physiology.wisc.edu
Igor O Volkov
Hiroyuki Oya
Hiroto Kawasaki
Richard A Reale
Albert Fenoy
Mitchell Steinschneider
Matthew A Howard III
Resource Type: Journal article
Publication Details: Hearing research, Vol.238(1-2), pp.12-24
DOI: 10.1016/j.heares.2007.11.012
PMID: 18207680
PMCID: PMC5605818
NLM abbreviation: Hear Res
ISSN: 0378-5955
eISSN: 1878-5891
Publisher: Elsevier BV; Netherlands
Grant note: HD-03352 / NICHD NIH HHS DC-04290 / NIDCD NIH HHS R01 DC004290-08 / NIDCD NIH HHS R01 DC004290 / NIDCD NIH HHS M01 RR000059-441198 / NCRR NIH HHS R03 MH070497 / NIMH NIH HHS R01 DC004290-09 / NIDCD NIH HHS R01 DC000657 / NIDCD NIH HHS R01 DC004290-05 / NIDCD NIH HHS M01-RR59 / NCRR NIH HHS M01 RR000059-457000 / NCRR NIH HHS M01 RR000059 / NCRR NIH HHS MH-070497 / NIMH NIH HHS P30 HD003352 / NICHD NIH HHS R01 DC004290-04 / NIDCD NIH HHS R01 DC004290-06A1 / NIDCD NIH HHS M01 RR000059-466719 / NCRR NIH HHS R01 DC004290-07 / NIDCD NIH HHS
Language: English
Date published: 04/2008
Academic Unit: Neurology; Iowa Neuroscience Institute; Neurosurgery; Otolaryngology
Record Identifier: 9984020502702771

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