Modeling and MEG evidence of early consonance processing in auditory cortex
Fig 3
Model responses to single IRNs.
(A, B) Latency predictions for iterated rippled noise compared with experimental data reported by a previous study [9]. Simulations were performed using the same stimuli parameters as in the original experiment (i.e., (A) 16 iterations, (B) 16 ms delay; both bandpass filtered between 0.8 kHz and 3.2 kHz). Latency predictions were averaged across N = 60 runs of the model, error bars are standard errors of the mean. (C) Comparison of the collective response of the excitatory ensembles in the decoder (computed as an average across populations) with the equivalent dipole moment elicited at the POR generator. The stimulus was an iterated rippled noise with 16 iterations and a delay of 8 ms, bandpass filtered between 0.8 kHz and 3.2 kHz. Shaded contours are standard errors. (D–H) Averaged responses at different stages of the model: (D) periodicity detectors, (E/F) excitatory/inhibitory ensembles in the decoder, (G/H) excitatory/inhibitory ensembles in the sustainer.