Steady state evoked potential (SSEP) responses in the primary and secondary somatosensory cortices of anesthetized cats: Nonlinearity characterized by harmonic and intermodulation frequencies
Fig 6
Nontagged frequencies between 50-150Hz in S2 are modulated by F2 = 200Hz vibratory amplitude.
(A)-(C) F1 main effect (A), F2 main effect (B), interaction (C) F-statistics from ANOVA performed on logP in S1 (shades of pale blue to blue) and S2 (shades of pale red to red). We plotted 95th percentile (top 5%), 90th (top 10%), and 50th (median). Some channels in S2 showed significant main effect of 200Hz vibratory amplitude in nontagged frequencies (+/-0.5Hz outside of the tagged, harmonic, and intermodulation frequencies, and outside of 50Hz, 100Hz, and 150Hz) from 50-150Hz. No main effects of 23Hz amplitude or interaction. We smoothed lines for a display purpose (1 data point per 1Hz). Note that [-] represents unitless.