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All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year AND OR AND NOT All fields Title Creator / Publisher Keyword Year Sort by creator [A → Z]' creator [Z → A]' publishing year ↑ (asc)' publishing year ↓ (desc)' title [A → Z]' title [Z → A]' Simple Search Hits 1 – 6 of 6 1 A Chimpanzee’s (Pan troglodytes) Perception of Variations in Speech: Identification of Familiar Words when Whispered and When Spoken by a Variety of Talkers Heimbauer, Lisa A; Owren, Michael J; Beran, Michael J In: Heimbauer, Lisa A; Beran, Michael J; & Owren, Michael J. (2018). A Chimpanzee’s (Pan troglodytes) Perception of Variations in Speech: Identification of Familiar Words when Whispered and When Spoken by a Variety of Talkers. International Journal of Comparative Psychology. Retrieved from: http://www.escholarship.org/uc/item/01t81345 (2018) BASE Show details 2 A Longitudinal Assessment of Vocabulary Retention in Symbol-Competent Chimpanzees (Pan troglodytes) Heimbauer, Lisa A.; Beran, Michael J. In: Language Research Center (2015) BASE Show details 3 A Longitudinal Assessment of Vocabulary Retention in Symbol-Competent Chimpanzees (Pan troglodytes) Beran, Michael J.; Heimbauer, Lisa A.. - : Public Library of Science, 2015 BASE Show details 4 Investigating Speech Perception in Evolutionary Perspective: Comparisons of Chimpanzee (Pan troglodytes) and Human Capabilities Heimbauer, Lisa A In: Psychology Dissertations (2012) BASE Show details 5 A Chimpanzee Recognizes Synthetic Speech With Significantly Reduced Acoustic Cues to Phonetic Content Heimbauer, Lisa A.; Beran, Michael J.; Owren, Michael J.. - 2011 Abstract: A long-standing debate concerns whether humans are specialized for speech perception [1–7], which some researchers argue is demonstrated by the ability to understand synthetic speech with significantly reduced acoustic cues to phonetic content [2–4,7]. We tested a chimpanzee (Pan troglodytes) that recognizes 128 spoken words [8,9], asking whether she could understand such speech. Three experiments presented 48 individual words, with the animal selecting a corresponding visuo-graphic symbol from among four alternatives. Experiment 1 tested spectrally reduced, noise-vocoded (NV) synthesis, originally developed to simulate input received by human cochlear-implant users [10]. Experiment 2 tested “impossibly unspeechlike” [3] sine-wave (SW) synthesis, which reduces speech to just three moving tones [11]. Although receiving only intermittent and non-contingent reward, the chimpanzee performed well above chance level, including when hearing synthetic versions for the first time. Recognition of SW words was least accurate, but improved in Experiment 3 when natural words in the same session were rewarded. The chimpanzee was more accurate with NV than SW versions, as were 32 human participants hearing these items. The chimpanzee's ability to spontaneously recognize acoustically reduced synthetic words suggests that experience rather than specialization is critical for speech-perception capabilities that some have suggested are uniquely human [12–14]. Keyword: Article URL: https://doi.org/10.1016/j.cub.2011.06.007 http://www.ncbi.nlm.nih.gov/pubmed/21723125 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3143218 BASE Hide details 6 Perception of Synthetic Speech by a Language-Trained Chimpanzee (Pan troglodytes) Heimbauer, Lisa A. In: Psychology Theses (2009) BASE Show details

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