Document Detail


The role of harmonic resolvability in pitch perception in a vocal nonhuman primate, the common marmoset (Callithrix jacchus).
MedLine Citation:
PMID:  23699526     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Pitch is one of the most fundamental percepts in the auditory system and can be extracted using either spectral or temporal information in an acoustic signal. Although pitch perception has been extensively studied in human subjects, it is far less clear how nonhuman primates perceive pitch. We have addressed this question in a series of behavioral studies in which marmosets, a vocal nonhuman primate species, were trained to discriminate complex harmonic tones differing in either spectral (fundamental frequency [f0]) or temporal envelope (repetition rate) cues. We found that marmosets used temporal envelope information to discriminate pitch for acoustic stimuli with higher-order harmonics and lower f0 values and spectral information for acoustic stimuli with lower-order harmonics and higher f0 values. We further measured frequency resolution in marmosets using a psychophysical task in which pure tone thresholds were measured as a function of notched noise masker bandwidth. Results show that only the first four harmonics are resolved at low f0 values and up to 16 harmonics are resolved at higher f0 values. Resolvability in marmosets is different from that in humans, where the first five to nine harmonics are consistently resolved across most f0 values, and is likely the result of a smaller marmoset cochlea. In sum, these results show that marmosets use two mechanisms to extract pitch (harmonic templates [spectral] for resolved harmonics, and envelope extraction [temporal] for unresolved harmonics) and that species differences in stimulus resolvability need to be taken into account when investigating and comparing mechanisms of pitch perception across animals.
Authors:
Michael S Osmanski; Xindong Song; Xiaoqin Wang
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  The Journal of neuroscience : the official journal of the Society for Neuroscience     Volume:  33     ISSN:  1529-2401     ISO Abbreviation:  J. Neurosci.     Publication Date:  2013 May 
Date Detail:
Created Date:  2013-05-23     Completed Date:  2013-08-09     Revised Date:  2014-06-24    
Medline Journal Info:
Nlm Unique ID:  8102140     Medline TA:  J Neurosci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  9161-8     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Acoustic Stimulation
Animals
Callithrix / physiology*
Conditioning, Operant
Cues
Female
Male
Noise
Pitch Discrimination / physiology*
Pitch Perception / physiology*
Psychophysics
Reaction Time
Time Factors
Vocalization, Animal / physiology*
Grant Support
ID/Acronym/Agency:
DC 03180/DC/NIDCD NIH HHS; R01 DC003180/DC/NIDCD NIH HHS; T32 DC000023/DC/NIDCD NIH HHS; T32 DC000023/DC/NIDCD NIH HHS
Comments/Corrections

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