Microstimulation in a spiking neural network model of the midbrain superior colliculus
Fig 3
Spatial properties of input current and neural response.
(A) Input stimulus of 150 pA (100 ms), is presented to the network around the vicinity of the tip of the electrode. Current amplitude drops exponentially with distance from the tip location at 0 with λ = 10mm−1 in every direction on the collicular map. (B,C) Spike counts of neurons activated by microstimulation, without including lateral connections in the motor map. The gaze-motor map is stimulated at the corresponding locations prescribed by the logarithmic afferent mapping function (B: R = 5°, ϕ = 0°;C: R = 31°, ϕ = 30°).