The pressure amplitude was set to achieve perceptible chest wall motion and was adjusted if possible to optimize ventilation.
Without user input, the installation stays at rest—"only a slight breathing motion is perceptible".
Shannon Finley's Mixed Media Paintings Arehearsesric Beauthes.
The images make perceptible air, sometimes set in motion by the movement of the dancers, sometimes moving their bodies.
On a whim Sinatra attended a Jascha Heifetz concert at Carnegie Hall in 1940 and was captivated by the way "he could get to the end of the bow and continue without a perceptible missing beat in the motion".
Facial motion was barely perceptible and complete eye closure was not possible, consistent with grade 5 facial palsies on the House-Brackmann facial nerve grading system.
Additionally, the motion should be visually perceptible even in a peripheral vision.
Another culprit was Simone Alaimo, who as Basilio managed to go through many of the motions of being funny to no perceptible comic effect and whose singing was unimpressive.
It appears that Xenocrates pictured the universe as unfolding in the sequence: (1) forms = numbers; (2) lines; (3) planes; (4) solids; (5) solids in motion, i.e. astronomical bodies; …; (n) ordinary perceptible things.
