The visual cortex produces gamma band echo in response to broadband visual flicker
Fig 10
Oscillatory input current reveals an amplification of oscillatory dynamics at the ~48 Hz resonance frequency.
(A) Oscillatory input current to E-cells (black line) and constant current to I-cells (orange line). (B) Spike rastergram for E-cells and I-cells. (C) The average membrane potential of the E-cells. (D) Example of power spectral density for input current at 48 Hz (resonance frequency, black line) and at 78 Hz (non-resonance, orange line). (E) Power spectral density of the average membrane potential for oscillatory input over multiple frequencies, 1–100 Hz, and amplitude of 9 μA.