TABLE 1.
Across-subject averages of the maximum likelihood estimates of SSM parameters
|
CP |
WO
|
|||||||
|---|---|---|---|---|---|---|---|---|
| SSMLTI,1 | SSMLTI,2 | SSMVP,1 | SSMVP,2 | SSMLTI,1 | SSMLTI,2 | SSMVP,1 | SSMVP,2 | |
| Phase 1 | ||||||||
| aslow | 0.924 (0.043) | 0.991 (0.012) | 0.971 (0.028) | 0.986 (0.016) | 0.960 (0.031) | 0.983 (0.025) | 0.979 (0.016) | 0.986 (0.016) |
| bslow | 0.137 (0.057) | 0.062 (0.016) | 0.081 (0.039) | 0.112 (0.057) | 0.245 (0.099) | 0.159 (0.046) | 0.149 (0.078) | 0.116 (0.048) |
| afast | N/A | 0.629 (0.102) | N/A | 0.369 (0.350) | N/A | 0.519 (0.318) | N/A | 0.492 (0.324) |
| bfast | N/A | 0.158 (0.051) | N/A | 0.003 (0.005) | N/A | 0.193 (0.104) | N/A | 0.077 (0.076) |
| Phase 2 | ||||||||
| aslow | N/A | N/A | 0.779 (0.150) | 0.946 (0.140) | N/A | N/A | 0.846 (0.102) | 0.891 (0.099) |
| bslow | N/A | N/A | 0.093 (0.089) | 0.064 (0.058) | N/A | N/A | 0.242 (0.141) | 0.144 (0.127) |
| afast | N/A | N/A | N/A | 0.573 (0.263) | N/A | N/A | N/A | 0.480 (0.284) |
| bfast | N/A | N/A | N/A | 0.120 (0.079) | N/A | N/A | N/A | 0.230 (0.181) |
| Phase 3 | ||||||||
| aslow | N/A | N/A | 0.834 (0.077) | 0.792 (0.388) | N/A | N/A | 0.955 (0.038) | 0.975 (0.034) |
| bslow | N/A | N/A | 0.318 (0.187) | 0.170 (0.123) | N/A | N/A | 0.375 (0.137) | 0.330 (0.170) |
| afast | N/A | N/A | N/A | 0.400 (0.347) | N/A | N/A | N/A | 0.548 (0.365) |
| bfast | N/A | N/A | N/A | 0.175 (0.256) | N/A | N/A | N/A | 0.088 (0.114) |
| Sensorimotor bias | ||||||||
| bx | 2.707 (5.330) | −3.405 (2.233) | 3.189 (43.382) | −4.101 (1.758) | −3.065 (10.986) | −4.071 (8.599) | 2.562 (28.544) | −3.098 (13.398) |
| Hyperparameters | ||||||||
| σinitial2 | 36.107 (34.135) | 1* (0.00) | 48.071 (43.382) | 1* (0.00) | 1* (0.00) | 1* (0.00) | 12.209 (28.544) | 5.737 (13.398) |
| σoutput2 | 13.358 (4.537) | 12.791 (3.604) | 17.417 (4.702) | 14.925 (5.970) | 13.680 (10.986) | 7.482 (8.599) | 17.699 (12.473) | 16.469 (12.408) |
| σstate2 | 6.378 (3.550) | 2.530 (1.643) | 1.255 (2.270) | 1.167 (2.479) | 9.911 (5.504) | 8.195 (7.624) | 3.539 (2.953) | 2.123 (1.644) |
Values are means, with SDs in parentheses. Due to our parameterization of the SSMs, the initial state and state noise variance estimates for two-rate models need to be multiplied by 2 to be comparable to the corresponding variance estimates for one-rate models. That the average and SD of phase 1 aslow are the same in CP and WO to three decimal places for SSMVP,2 is not a typographical error. An asterisk denotes that all subjects in that sample had estimates equal to a bound placed in that parameter. N/A, parameter not applicable for that SSM.