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The auditory system operates over a vast range of sound pressure levels (100-120 dB) with nearly constant discrimination ability across most of the range, well exceeding the dynamic range of most auditory neurons (20-40 dB). Dean et al. (2005) have reported that the dynamic range of midbrain auditory neurons adapts to the distribution of sound levels in a(More)
Auditory adaptation to sound-level statistics occurs as early as in the auditory nerve (AN), the first stage of neural auditory processing. In addition to firing rate adaptation characterized by a rate decrement dependent on previous spike activity, AN fibers show dynamic range adaptation, which is characterized by a shift of the rate-level function or(More)
The Weber–Fechner law states that perceived intensity is proportional to physical stimuli on a logarithmic scale. In this work, we formulate a Bayesian framework for the scaling of perception and find logarithmic and related scalings are optimal under expected relative error fidelity. Therefore, the Weber–Fechner law arises as being information(More)
The spatio-temporal pattern of auditory nerve (AN) activity, representing the relative timing of spikes across the tonotopic axis, contains cues to perceptual features of sounds such as pitch, loudness, timbre, and spatial location. These spatio-temporal cues may be extracted by neurons in the cochlear nucleus (CN) that are sensitive to relative timing of(More)
9 10 The spatio-temporal pattern of auditory-nerve (AN) activity, representing the relative timing of spikes 11 across the tonotopic axis, contains cues to perceptual features of sounds such as pitch, loudness, timbre, 12 and spatial location. These spatio-temporal cues may be extracted by neurons in the cochlear nucleus 13 (CN) that are sensitive to the(More)
Auditory adaptation to sound level statistics occurs as early as in the auditory nerve (AN), the 11 first stage of neural auditory processing. In addition to firing rate adaptation characterized by a 12 rate decrement dependent on previous spike activity, AN fibers show dynamic range adaptation, 13 which is characterized by a shift of the rate-level(More)
The long-term goal of our research is to understand the neural mechanisms that mediate the ability of normal-hearing people to understand speech and localize sounds in everyday acoustic environments comprising reverberation and competing sound sources. In the past year, we continued work on three areas: (1) Physiological studies of sound localization in(More)
The long-term goal of this research is to understand the neural mechanisms that mediate the ability of normal-hearing people to understand speech and localize sounds in complex acoustic environments comprising reverberation and competing sound sources. In the past year, we continued work on two research projects: (1) Physiological studies of sound(More)
The long-term goal of this project is to understand the neural mechanisms that mediate the ability of normal-hearing people to understand speech and localize sounds in complex acoustic environments comprising reverberation and competing sound sources. In the past year, we focused on two research projects: (1) Physiological and psychophysical studies of(More)
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