Barany Chair
The Barany chair or Bárány chair, named for the Hungarian physiologist Bárány Róbert, is a device used for aerospace physiology training, particularly for student pilots. The subject is placed in the chair, blindfolded, then spun about the vertical axis while keeping his head upright or tilted forward or to the side.
At ETC, they do many things but one of their specialties is flight training and pilot preparedness. I worked with them to develop a new Barany chair for their product lineup.