Auditory fields evoked at dyad onset.

(A) MEG grand-mean source waveforms in response to the pooled stimulus conditions. The course of the stimuli is shown in grey (noise) and black (IRN) below the source waveforms; note the prominent negative POR deflection (N1m) at the transition from the first to the second stimulus segment. BL = baseline. (B) Projection of the dipole locations (means and 99% bootstrap confidence intervals) onto the axial view of auditory cortex as suggested by Leonard et al. [43]. (C) Morphology of the POR in response to the dyad onset in the single experimental conditions (second stimulus segment), pooled over hemispheres. (D) 99% Bootstrap confidence intervals for the POR amplitudes and latencies in the single experimental conditions. In subplots (B, D) confidence intervals are bias-corrected and accelerated to compensate for bias and skewness in the distribution of the bootstrap estimates, as recommended by Efron and Tibshirani [44].