Auditory sensitivity, equal loudness, temporal resolving power, and vocalizations in the house finch (Carpodacus mexicanus)

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In 3 experiments, absolute thresholds for pure tones were measured in 4 house finches, ages 1–5 yrs, using avoidance conditioning and a modified method of limits. Response reaction time to each tone presentation served as a data base for generating a family of “equal loudness” contours. Temporal resolving power was measured in 2 additional Ss and compared with similar measures in humans. Results are discussed in relation to previous studies of vocalizations in the house finch, and the average power spectra of selected individual vocalizations are presented. (45 ref) (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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