Magnetoencephalography (MEG) ITD following response (ITD-FR) global field power (GFP) across all participants as a function of ITD. Gray points show individual GFP values. Boxplots show the median and the 25% to 75% percentile. Orange lines show the fitted model including both the exponential and sinusoidal terms (STAR Methods), while mean and standard error are shown in red. Non-monotonic changes are captured by a model including an exponential term (gray dashed line)—capturing the overall GFP reduction with increasing ITD—and a sinusoidal term (gray solid line)—capturing the oscillatory pattern of the responses.
