Document Detail

Perception of missing fundamental pitch by 3- and 4-month-old human infants.
MedLine Citation:
PMID:  23231118     Owner:  NLM     Status:  MEDLINE    
A hallmark of complex pitch perception is that the pitch of a harmonic complex is the same whether or not the fundamental frequency is present. By 7 months, infants appear to discriminate on the basis of the pitch of the missing fundamental (MF). Although electrophysiological cortical responses to MF pitch changes have been recorded in infants younger than 7 months, no psychophysical studies have been published. This study investigated the ability of 3- and 4-month-olds to perceive the pitch of MF harmonic complexes based on fundamentals of 160 Hz and 200 Hz using an observer-based method. In experiment I, to demonstrate MF pitch discrimination, 3- and 4-month-olds were required to ignore spectral changes in complexes with the same fundamental and to respond only when the fundamental changed. In experiment II, a 60-260 Hz noise was presented with complexes to mask combination tones at the fundamental frequency. In experiment III, complexes were bandpass filtered with a -12 dB/octave slope to limit use of spectral edge cues and presented with a pink noise to mask all distortion products. Nearly all infants tested categorized complexes by MF pitch in these experiments, suggesting perception of the missing fundamental at 3 months.
Bonnie K Lau; Lynne A Werner
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  132     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-12-12     Completed Date:  2013-05-24     Revised Date:  2013-12-04    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3874-82     Citation Subset:  IM    
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MeSH Terms
Acoustic Stimulation
Age Factors
Analysis of Variance
Child Development*
Infant Behavior
Noise / adverse effects
Perceptual Masking
Pitch Discrimination*
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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