Fig. 9.

Depth profile of the efficacy to trigger a silent state. A: laminar profile of LFP activity in the neocortical slab showing a spontaneous transition to the silent state and an evoked transition. B: depth-current intensity profile of the probability to trigger a silent state, averaged from 5 experiments (at least 10 stimuli at each electrode's pair and stimulus intensity). The probability matrix is color coded and ranges from 0% (white) to 100% efficacy (black). Note the higher efficiency between 900 and 1,500 μm.