Figure 1

Current versus time. Current traces recorded, with a holding potential V = − 80 mV, on the same cell during the photoactivation of 1 µM RuBi–GABA by 1PE (458 nm, 100 ms, 6.7 µW) (a) and of 1 µM RuBi–GABA with 20 µM bicuculline uncaged by 1PE (same conditions) (b); no current spikes were registered.