Modulation of θ oscillations during HV and LV locomotion.

Mean power (A) and mean duration (B) modulation indices for each channel are plotted as a function of the p-value of the difference between HV and LV bout distributions by KS-Test. Positive modulation indices indicate higher mean power and longer mean duration during HV bouts in (A) and (B), respectively. Each black dot represents a test session. Channels whose power or duration modulation index was statistically significant by KS-Test at the 0.01 level are circled in red. A significant number of channels exhibit power modulation (18/185, p < 0.01 BT) and duration modulation (5/185, p = 0.039 BT). However, the relatively low magnitude of observed modulation indices indicates that the HV and LV mean powers and durations are predominantly within a scalar factor of only 0.95 of each other. The underlying data can be found at https://doi.org/10.5061/dryad.kk63d49. BT, binomial test; HV, high velocity; KS, Kolmogorov-Smirnov Test; LV, low velocity; PMI, Power modulation index.