FIGURE 8 | Example of strong similarity between frequencies of stimulus-phase-locked, stimulus-phase-independent, and background oscillations in SC neuron. (A) Raster plot showing stimulus-phase-locked oscillations. (B) PSTH of response in (A) (0.5ms resolution), an average of 100 trials. (C) ACH from PSTH in (B) revealing stimulus-phase-locked oscillations at 10Hz. (D) cACH after removing shift predictor showing the presence of oscillations at a similar frequency [cf. (C) ]. (E) Shift predictor of ACH in (C) . (F) ACH of the background activity recorded after visual stimulation revealing a similar oscillatory frequency at 9.5Hz. (G–J) Power spectra prepared for (C–F) , respectively. Prominent peaks are visible at around 10Hz in all power spectra.