Table 2

Summary of default model MT parameters used in simulations

ParameterDescriptionValue
NMTNumber of MT units225
c=(cx,cy) Coordinates of visual field left(45°,45°) /(64,64) pixels
r=(rx,ry) Coordinates of MT RF leftArranged in a 15 × 15 grid spaced apart by 7.1° (8 pixels)
σdMaximum extent of random deviation in MT direction
preference about the radial direction
180°
σrEffective RF radius6° (7 pixels)
σvSensitivity to optic flow that differs from the preferred direction10°
σsSensitivity to optic flow that differs from the preferred speed0.5°/s (0.45 pixels/s)
αMTMT activation passive decay rate0.1
βMTMT activation upper bound2.5
dtIntegration time step0.1 frame(0.003sec)