Figure 4. Whisker Touch Statistics.

For the whiskers of interest, contact onset and offset times were measured for all touches ending prior to the moment of choice.

(A) Number of touches per trial per whisker (red—rough texture; blue—smooth texture)

(B) Individual touch durations.

(C) Summated duration of all touches of a single whisker per trial.

(D) Time from first contact of the whisker of interest to the rat's choice. Values are consistent with a reported range of 150 to 500 ms in a different texture discrimination task [34].