english: (Applause) I call this the staircase illusion, and actually when the staircase illusion abruptly ended, he froze, and this is called freezing of gait.
non_english: Toch? (Applaus) Ik noem dit de trap-illusie. Toen de trap-illusie plotseling eindigde, verstijfde mijn oom; 'bevriezing van beweging' noemt men dat.