Sensorineural hearing loss changes midbrain coding from contrast-based to energy-based

Evidence

Model IC responses with impaired AN inputs (Fig. 4b ) differ dramatically from the healthy responses. The band-enhanced rate profile (Fig. 4b , blue) has peaks approximately where the healthy model has valleys, and vice versa. The impaired model profile is explained by reduced synchrony capture: the impaired AN model synchronizes to F0 whenever the fibres are adequately driven by stimulus energy (see Fig. 2f ). Thus the impaired band-enhanced rate profile reflects the energy spectrum of the vowel, unlike the healthy rate profile, which is inversely related to energy. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5488