So a scientist named Paul Bach-y-Rita put blind people in a modified dental chair, and he set up a video feed, and he put something in front of the camera, and then you would feel that poked into your back with a grid of solenoids.
Teadlane Paul Bach-y-Rita lasi  oma katses pimedatel istuda spetsiaalselt kohandatud hambaarstitoolile ning seadis üles video-ekraani nii, et kui kaamera ette pandi mingi objekt, siis katsealune tundis selle eseme  kujutise vajutust oma seljal tooli seljatoes oleva seadme abil.