Fig. 4.
Example of active components of G and B. The figure shows the same cell as in Fig. 3 but with hyperpolarized trace subtracted from depolarized traces to isolate the active components of G and B. A: active component of G. As expected from Fig. 3, the active component of G is net negative and increases in magnitude with a maximum frequency around 300 Hz (visually identified). B: active component of B (Bhyp, hyperpolarized trace; Bdep, depolarized trace). Likewise the active component of B is net negative, but it peaks at a lower frequency.