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The Use of interval ratios in consonance perception by rats (Rattus norvegicus) and humans (Homo sapiens)

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dc.contributor.author Crespo Bojorque, Paola, 1985-
dc.contributor.author Toro Soto, Juan Manuel, 1976-
dc.date.accessioned 2023-04-27T06:16:22Z
dc.date.available 2023-04-27T06:16:22Z
dc.date.issued 2016
dc.identifier.citation Crespo-Bojorque P, Toro JM. The Use of interval ratios in consonance perception by rats (Rattus norvegicus) and humans (Homo sapiens). J Comp Psychol. 2015;129(1):42-51. DOI: 10.1037/a0037991
dc.identifier.issn 0735-7036
dc.identifier.uri http://hdl.handle.net/10230/56590
dc.description.abstract Traditionally, physical features in musical chords have been proposed to be at the root of consonance perception. Alternatively, recent studies suggest that different types of experience modulate some perceptual foundations for musical sounds. The present study tested whether the mechanisms involved in the perception of consonance are present in an animal with no extensive experience with harmonic stimuli and a relatively limited vocal repertoire. In Experiment 1, rats were trained to discriminate consonant from dissonant chords and tested to explore whether they could generalize such discrimination to novel chords. In Experiment 2, we tested if rats could discriminate between chords differing only in their interval ratios and generalize them to different octaves. To contrast the observed pattern of results, human adults were tested with the same stimuli in Experiment 3. Rats successfully discriminated across chords in both experiments, but they did not generalize to novel items in either Experiment 1 or Experiment 2. On the contrary, humans not only discriminated among both consonance–dissonance categories, and among sets of interval ratios, they also generalized their responses to novel items. These results suggest that experience with harmonic sounds may be required for the construction of categories among stimuli varying in frequency ratios. However, the discriminative capacity observed in rats suggests that at least some components of auditory processing needed to distinguish chords based on their interval ratios are shared across species.
dc.description.sponsorship This research was supported by grants PSI2010-20029 from the Spanish Ministerio de Ciencia, and ERC Starting Grant agreement n.312519.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher American Psychological Association (APA)
dc.relation.ispartof Journal of Comparative Psychology. 2015;129(1):42-51.
dc.rights © American Psychological Association (APA) http://dx.doi.org/10.1037/a0037991 This article may not exactly replicate the final version published in the APA journal. It is not the copy of record.
dc.title The Use of interval ratios in consonance perception by rats (Rattus norvegicus) and humans (Homo sapiens)
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1037/a0037991
dc.subject.keyword consonance
dc.subject.keyword interval ratio
dc.subject.keyword auditory discrimination
dc.subject.keyword comparative cognition
dc.subject.keyword rats
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/312519
dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/PSI2010-20029
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/acceptedVersion


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