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Université de Fribourg

Auditory time perception in Huntington’s disease

Vez, S. ; Köhli, J. ; Frey, B. ; Magezi, David A. ; Annoni, Jean-Marie ; Burgunder, J.-M.

In: Neuropsychologia, 2018, vol. 119, p. 247–252

Huntington's disease (HD) is characterized by early involvement of the striatum. It affects the pace of repetitive motor activity, as motor timing depends on basal ganglia activity. However, data are lacking on the impact of this process on auditory time perception in motor non-affected gene carriers.Objective: This work aims to test the performance in time perception of a group of mutation...

Université de Fribourg

A function for binaural integration in auditory grouping and segregation in the inferior colliculus

Nakamoto, Kyle T. ; Shackleton, Trevor M. ; Magezi, David A. ; Palmer, and Alan R.

In: Journal of Neurophysiology, 2015, vol. 113, no. 6, p. 1819–1830

Responses of neurons to binaural, harmonic complex stimuli in urethane-anesthetized guinea pig inferior colliculus (IC) are reported. To assess the binaural integration of harmonicity cues for sound segregation and grouping, responses were measured to harmonic complexes with different fundamental frequencies presented to each ear. Simultaneously gated harmonic stimuli with fundamental frequencies...

Université de Fribourg

Electrical neuroimaging during auditory motion aftereffects reveals that auditory motion processing is motion sensitive but not direction selective

Magezi, David A. ; Buetler, Karin A. ; Chouiter, Leila ; Annoni, Jean-Marie ; Spierer, Lucas

In: Journal of Neurophysiology, 2013, vol. 109, no. 2, p. 321-331

Following prolonged exposure to adaptor sounds moving in a single direction, participants may perceive stationary-probe sounds as moving in the opposite direction [direction-selective auditory motion aftereffect (aMAE)] and be less sensitive to motion of any probe sounds that are actually moving (motion-sensitive aMAE). The neural mechanisms of aMAEs, and notably whether they are due to...