Quantitative comparison of the psychometric functions with the ideal-observer neurometric functions
| Physiology mean (SEM) | Behavior mean (SEM) | p value (t test) | |
|---|---|---|---|
| Accuracy (% correct) | |||
| Rate model (SU) | 75.66% (1.26%) | 78.62% (1.11%) | 0.082 |
| Summation model (SU) | 72.31% (1.18%) | 78.62% (1.11%) | <0.001 |
| Rate model (MU) | 76.83% (1.01%) | 78.53% (0.75%) | 0.177 |
| Summation model (MU) | 69.41% (1.52%) | 78.53% (0.75%) | <0.001 |
| Threshold (T) | |||
| Rate model (SU) | 7.29% (0.70%) | 6.10% (0.69%) | 0.231 |
| Rate model (MU) | 7.46% (0.41%) | 6.21% (0.36%) | 0.046 |
| Slope (β) | |||
| Rate model (SU) | 3.87 (0.68) | 8.43 (0.64) | <0.001 |
| Rate model (MU) | 4.22 (0.60) | 9.18 (0.76) | <0.001 |
| False-alarm rate (γ) | |||
| Rate model (SU) | 4.56% (1.16%) | 8.13% (1.44%) | 0.058 |
| Rate model (MU) | 10.26% (1.18%) | 9.75% (1.25%) | 0.768 |