PEBL Hub — IRB Fact Sheet — 2026-08-23
Pursuit Rotor
Category:Motor
Duration:~2 minutes
Parameters:5 configurable parameters available
Version:1.0
Input:Mouse, Touch
Description
Motor tracking task requiring continuous tracking of a moving target with mouse or touch input. Measures motor coordination and learning.
Key Parameters
| trialtime | Duration of each trial in seconds (default: 15) |
| trials | Number of trials to complete (default: 4) |
| targsize | Size of the target in pixels (default: 25) |
| radius | Radius of the rotation path in pixels (default: 253) |
| speed | Rotation speed (fraction of circle per frame, 0.1333333 = 7.5 rotations/sec) (default: 0.1333333) |
Example Data Output (5 sample rows)
| subnum | trial | steps | laststeps | timeNow | timeElapsed | targX | targY | mouseX | mouseY | inside | tdiff | totaltime | diff | totaldev | totaldev2 | meandev | meandev2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 100-1-3 | practice | 0 | 0 | 9816 | 0 | 1053 | 450 | 1062 | 445 | 1 | 0 | 0 | 10.2956 | 10.2956 | 0 | inf | nan |
| 100-1-3 | practice | 1 | 1 | 9849 | 33 | 1052 | 455 | 1062 | 445 | 1 | 33 | 33 | 14.1421 | 24.4378 | 0 | 24.4378 | nan |
| 100-1-3 | practice | 2 | 2 | 9881 | 65 | 1052 | 460 | 1062 | 445 | 1 | 32 | 65 | 18.0278 | 42.4655 | 0 | 21.2328 | nan |
| 100-1-3 | practice | 3 | 3 | 9917 | 101 | 1052 | 466 | 1062 | 445 | 1 | 36 | 101 | 23.2594 | 65.7249 | 0 | 21.9083 | nan |
| 100-1-3 | practice | 4 | 4 | 9941 | 125 | 1052 | 469 | 1060 | 446 | 1 | 24 | 125 | 24.3516 | 90.0765 | 0 | 22.5191 | nan |