Figure 3.

A role of intrinsic membrane excitability as a gating signal in STPP. (A) Blue dots for priming photostimulation were positioned in a basal dendrite. The read-out action potentials (APs) were observed only when intrinsic excitability was combined with the prepositioned priming photolysis. Blue dots for priming photostimulation were located in a basal dendrite. (B) ~8 Hz oscillatory sinusoidal wave elicited by current injection triggered APs only when the peak was preceded by a priming signal (uncaging). The all-or-none APs were shown with 71% success rate (AP: n = 17; no AP: n = 7).