Bioinspired figure-ground discrimination via visual motion smoothing
Fig 10
Effect of the modulated steepness on the responses of the units in the Lm module.
(A) and (B) are the same as Fig 9A and 9B, respectively. (C) Stimulus-evoked membrane potentials in Lm (2nd to 7th columns). Only the responses of the centrally located unit in Lm are displayed. The parameter β was set as indicated on the top of each column, accordingly changing the sigmoid function’s steepness (4 curves in the 1st column). The half-activation voltage θ was fixed at –40 mV (upper row) or –28 mV (lower row). The scope of parameter modulation covered the Ir, Il, and Im modules. (D) and (E) are the same as Fig 9D and 9E, respectively. (F) Same as (C) except that the simulation was performed with the ‘bar+bg’ stimulus in (D). The scale bars in the bottom right corner apply to all the membrane potentials. Except for β and θ, all parameter values were the same as those used to produce the results shown in Fig 8.