title: Commentary: Revisiting vocal perception in non-human animals: a review of vowel discrimination, speaker voice recognition, and speaker normalization.
authors.affiliation: School of Communication Sciences and Disorders, Centre for Research on Brain, Language, and Music, McGill University Montreal, QC, Canada.
authors.forename: Linda
authors.initials: L
authors.lastname: Polka
authors.affiliation: Department of English and Center on Autobiographical Memory Research, Department of Psychology, Aarhus University Aarhus, Denmark.
authors.forename: Ocke-Schwen
authors.initials: OS
authors.lastname: Bohn
authors.affiliation: Department of Psychology and Program in Linguistics, The Pennsylvania State University, University Park Pennsylvania, PA, USA.
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Weiss
keywords: comparative research; infants; natural referent vowel framework; non-human animals; task demands; vowel perception asymmetries