Air
Stepped-Rock Sampling Limit
Sit cross-legged and rock the torso forward and back at roughly one Hz, but deliberately break the cycle into discrete steps — sample-and-hold rather than continuous sweep. Find the step rate at which the discretization becomes invisible to the body — where it phase-locks to...
Full Lesson Notes
Complete Practice
Sit cross-legged and rock the torso forward and back at roughly one Hz, but deliberately break the cycle into discrete steps — sample-and-hold rather than continuous sweep. Find the step rate at which the discretization becomes invisible to the body — where it phase-locks to a coherent continuous motion despite being constructed from stops. That rate is the body's perceptual sampling limit for that movement. Challenge: The threshold drifts with attention level and the invisible-to-the-body criterion is subjective.
