FIGURE 9 | Relationship between stimulus-phase-locked, stimulus-phase-independent, and background oscillatory frequencies found in one neuron, showing stimulus-phase-locked oscillations as a subharmonic of oscillations. (A) Raster plot showing stimulus-phase-locked oscillations. (B) PSTH of the response shown in (A) averaged over 100 trials. The histogram was built with 0.5ms resolution. (C) ACH prepared from PSTH (B) reviling stimulus-phase-locked oscillations in 16.5Hz. (D) cACH after removing shift predictor, showing the presence of oscillations in similar frequency as in (C) . (E) ACH prepared for background activity registered after visual stimulation, reviling similar frequency of oscillations as in previous diagram (33.3Hz). (F) shift predictor for the same neuron indicating the same frequency as in (C) . (G–J) Power spectra prepared for (C–F) , respectively.