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.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.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.doi http://dx.doi.org/10.1037/a0037991
- dc.identifier.issn 0735-7036
- dc.identifier.uri http://hdl.handle.net/10230/56590
- dc.language.iso eng
- dc.publisher American Psychological Association (APA)
- dc.relation.ispartof Journal of Comparative Psychology. 2015;129(1):42-51.
- dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/312519
- dc.relation.projectID info:eu-repo/grantAgreement/ES/3PN/PSI2010-20029
- 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.rights.accessRights info:eu-repo/semantics/openAccess
- dc.subject.keyword consonance
- dc.subject.keyword interval ratio
- dc.subject.keyword auditory discrimination
- dc.subject.keyword comparative cognition
- dc.subject.keyword rats
- 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.type.version info:eu-repo/semantics/acceptedVersion