Figure 3.

Population comparison of neurometric sensitivity while animals were engaged or disengaged in the AM detection task. A, Perceptual sensitivity (black) and neural sensitivity during the engaged (red) and disengaged conditions (blue). There was a significant difference between engaged and disengaged firing rate-based neurometric functions at AM depths >12.8%. B, Task engagement led to an improvement in classifier performance for a subset of units. Pattern classifier analysis revealed that neurometric sensitivity to the AM stimulus was altered between engaged and disengaged states. The change in classifier performance for individual units is illustrated by the thin gray lines connecting classifier performance during the engaged (red circle) and disengaged conditions (blue circles, units for which performance improved; gray circles, units for which performance declined or did not improve). Units are ordered by classifier performance during the engaged state, from best to worst. Error bars represent SEM.