Table 4

Parameters varied from default model in simulation experiments

ExperimentDescriptionParameterValues
MSTd headingleft-peripheral bias in heading representationγ[0.1,0.2,0.5,1,2,5,10]
MSTd RF sizeSD of Gaussian RFσMSTd[11.3°, 21.8°, 38.7°, 50.2°, 58.0°, 63.4°]
([12.8, 25.6, 51.2, 76.8, 102.4, 128] pixels)
MSTd directionDegree of intolerance to MT inputs that
mismatch the preferred radial pattern
q[1,2,4,6,8]
MT directionmaximum extent of random deviation between
the radial direction and each MT preferred direction
σd[0°, 60°, 120°, 180°, 240°, 300°, 360°]
MT speedBaseline beta distribution shape used to sample
speed preferences of each MT unit
ks4
MT speed + RFIntercept of linear regression fit that determines
RF size from eccentricity
βecc,00.19° (0.42 pixels)
MT speed + RFSlope of linear regression fit that determines RF
size from eccentricity
βecc,1[0.27, 0.54, 0.81, 1.07]° ([0.3, 0.6, 0.9, 1.2]) pixels