| Latency effect of the pitch response due to variations of frequency and spectral envelope. | |
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MedLine Citation:
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PMID: 17709289 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: A clear definition of pitch and timbre is still an open debate and often both terms are mixed up in investigations of tone height. However, fundamental frequency (f(0)) and spectral envelope of a sound play a major role in the perception of tone height. Recent electrophysiological experiments showed that one sub-component of the complex N 100-signal was found to be highly correlated to the perceived tone height. METHODS: Tone height was independently varied by both, a change of f(0) and spectral envelope in order to disentangle the influence of both parameters. Relative tone height was determined psychoacoustically. Neuromagnetic responses were evaluated using source-analysis. RESULTS: Perceived tone height increases with increasing f(0) or spectral envelope. Latency of the pitch change response (PCR) reacts oppositely for the two modi of tone height change. For increasing f(0) and fixed bandpass condition, tone height increases and the latency of the PCR decreases. In contrast, for increasing the center frequency of the bandpass with fixed f(0), tone height increases, but the latency of the PCR increases. CONCLUSIONS: The neuromagnetic pitch response is influenced by both, f(0) and spectral envelope. SIGNIFICANCE: Further investigations of the influence of pitch and timbre on neurophysiological pitch responses have to take into account that both, f(0) and spectral envelope, affect tone height and latency of the PCR. |
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Authors:
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Steffen Ritter; Hans Günter Dosch; Hans-Joachim Specht; Peter Schneider; André Rupp |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2007-08-20 |
Journal Detail:
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Title: Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology Volume: 118 ISSN: 1388-2457 ISO Abbreviation: Clin Neurophysiol Publication Date: 2007 Oct |
Date Detail:
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Created Date: 2007-09-17 Completed Date: 2007-11-20 Revised Date: 2008-09-10 |
Medline Journal Info:
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Nlm Unique ID: 100883319 Medline TA: Clin Neurophysiol Country: Netherlands |
Other Details:
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Languages: eng Pagination: 2276-81 Citation Subset: IM |
Affiliation:
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Section of Biomagnetism, Department of Neurology, University of Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany. steffen.ritter@med.uni-heidelberg.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Adult Electrophysiology Evoked Potentials, Auditory / physiology Female Functional Laterality / physiology Humans Magnetic Resonance Imaging Magnetoencephalography Male Pitch Perception / physiology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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