| The effects of a second stimulus on the auditory steady state response (ASSR) from the inferior colliculus of the chinchilla. | |
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MedLine Citation:
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PMID: 20210591 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The auditory steady-state response (ASSR) is an auditory evoked potential which follows the envelope of the stimulus. One of the advantages of the ASSR is that multiple stimulation frequencies can be tested simultaneously. In experiment 1, we evaluated the effects of simultaneously presenting two separate stimuli on ASSR response amplitude. In experiment 2, we evaluated the effects of presenting two ASSR-generating stimuli monotically vs. dichotically, either ipsilaterally or contralaterally to the recording electrode. Recordings were made from the chinchilla inferior colliculi, in response to tonebursts, two-tones, or sinusoidally-amplitude modulated tones. We found that the addition of a second stimulus resulted in a reduction in ASSR response amplitude at moderate to high stimulus levels. The amount of amplitude reduction was typically larger in the monotic (e.g. approximately 50%) vs. dichotic condition (e.g. approximately 10-20%), regardless of whether the responses were recorded ipsilaterally or contralaterally to the ear of stimulus presentation. In conclusion, central as well as peripheral interactions contribute to the reduction in ASSR amplitude in response to the simultaneous presentation of multiple stimuli. |
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Authors:
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Kathleen M McNerney; Robert F Burkard |
Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: International journal of audiology Volume: 49 ISSN: 1708-8186 ISO Abbreviation: Int J Audiol Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-07-08 Completed Date: 2010-10-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101140017 Medline TA: Int J Audiol Country: England |
Other Details:
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Languages: eng Pagination: 561-73 Citation Subset: IM |
Affiliation:
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Department of Rehabilitation Sciences, University at Buffalo, Buffalo, NY, USA. kmszalda@buffalo.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation
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methods Analysis of Variance Animals Auditory Perception / physiology* Chinchilla Electrodes, Implanted Evoked Potentials, Auditory* Functional Laterality Inferior Colliculi / physiology* |
| Grant Support | |
ID/Acronym/Agency:
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DC03600/DC/NIDCD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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