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Competition between cortical ensembles explains pitch-related dynamics of auditory evoked fields.

Tabas, A., Rupp, A. and Balaguer-Ballester, E., 2016. Competition between cortical ensembles explains pitch-related dynamics of auditory evoked fields. In: Villa, A.E.P., Masulli, P. and Rivero, A.J.P., eds. Artificial Neural Networks and Machine Learning:25th International Conference on Artificial Neural Networks, ICANN 2016, Barcelona, Spain, September 6-9, 2016, Proceedings, Part I. Berlin-Heidelberg: Springer-Verlag, 314-321.

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The latency of the N100m transient component of the magnetic auditory evoked fields presents a widely reported correlation withperceived pitch. These observations have been robustly reproduced in the literature for a number of different stimuli, indicating that the neural generator of the N100m has an important role in cortical pitch processing.In this work, we introduce a realistic cortical model of pitch perception revealing, for the first time to our knowledge, the mechanisms responsible for the observed relationship between the N100m and the perceived pitch. The model describes the N100m de ection as a transient state in cortical dynamics that starts with the incoming of a new subcortical input, holds during a winner-takes-all ensemble competition, and ends when the cortical dynamics reach equilibrium. This model qualitatively predicted the latency of the N100m of three families of stimuli.

Item Type:Book Section
ISBN:978-3-319-44777-3, 978-3-319-44778-0
Series Name:Lecture Notes in Computer Science
Uncontrolled Keywords:cortical dynamics; auditory evoked fields; N100m; pitch per- ception; perceptual integration; multi-attractor systems
Group:Faculty of Science & Technology
ID Code:24829
Deposited By: Symplectic RT2
Deposited On:07 Oct 2016 14:37
Last Modified:14 Mar 2022 13:59


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