ArticleThe Journal of the Acoustical Society of America2017
Formant-frequency discrimination of synthesized vowels in budgerigars (Melopsittacus undulatus) and humans.
Article in The Journal of the Acoustical Society of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Formant-frequency encoding in the inferior colliculus of awake rabbit: Physiological and model responses.Hearing research · 2026Article
- Normal behavioral discrimination of envelope statistics in budgerigars with kainate-induced cochlear synaptopathy.Hearing research · 2024Article
- Histological Correlates of Auditory Nerve Injury from Kainic Acid in the Budgerigar (Melopsittacus undulatus).Journal of the Association for Research in Otolaryngology : JARO · 2023Article
- Effects of sensorineural hearing loss on formant-frequency discrimination: Measurements and models.Hearing research · 2023Article
- Mechanisms of masking by Schroeder-phase harmonic tone complexes in the budgerigar (Melopsittacus undulatus).Hearing research · 2023Article
- Animal models of hidden hearing loss: Does auditory-nerve-fiber loss cause real-world listening difficulties?Molecular and cellular neurosciences · 2022Review
- Midbrain-Level Neural Correlates of Behavioral Tone-in-Noise Detection: Dependence on Energy and Envelope Cues.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Article
- Effects of Kainic Acid-Induced Auditory Nerve Damage on Envelope-Following Responses in the Budgerigar (Melopsittacus undulatus).Journal of the Association for Research in Otolaryngology : JARO · 2021Article
- Normal Tone-In-Noise Sensitivity in Trained Budgerigars despite Substantial Auditory-Nerve Injury: No Evidence of Hidden Hearing Loss.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Article
- Identifying cues for tone-in-noise detection using decision variable correlation in the budgerigar (Melopsittacus undulatus).The Journal of the Acoustical Society of America · 2020Article
- Effects of selective auditory-nerve damage on the behavioral audiogram and temporal integration in the budgerigar.Hearing research · 2019Article
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5 authors.
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Abstract
Vowels are complex sounds with four to five spectral peaks known as formants. The frequencies of the two lowest formants, F1and F2, are sufficient for vowel discrimination. Behavioral studies show that many birds and mammals can discriminate vowels. However, few studies have quantified thresholds for formant-frequency discrimination. The present study examined formant-frequency discrimination in budgerigars (Melopsittacus undulatus) and humans using stimuli with one or two formants and a constant fundamental frequency of 200 Hz. Stimuli had spectral envelopes similar to natural speech and were presented with random level variation. Thresholds were estimated for frequency discrimination of F1, F2, and simultaneous F1 and F2 changes. The same two-down, one-up tracking procedure and single-interval, two-alternative task were used for both species. Formant-frequency discrimination thresholds were as sensitive in budgerigars as in humans and followed the same patterns across all conditions. Thresholds expressed as percent frequency difference were higher for F1 than for F2, and were unchanged between stimuli with one or two formants. Thresholds for simultaneous F1 and F2 changes indicated that discrimination was based on combined information from both formant regions. Results were consistent with previous human studies and show that budgerigars provide an exceptionally sensitive animal model of vowel feature discrimination.
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