Figure 4
From: Neural Networks Mediating Perceptual Learning in Congenital Blindness
Apparatus and Schematic drawing of the experimental setup. (a) The tongue display unit (TDU) and Webcam mounted on a pair of safety goggles and fastened with an elastic band around the head. The image is translated into electro-tactile stimulation applied to the tongue using a 10 × 10 electrode array [boxed area in (b)]. The electrodes become active when a dark object enters the visual field of the camera. (c,d) An actual picture of a participant in the obstacle course pointing (c) and avoiding (d) obstacles. (e) Familiarization area with the juxtaposition of three different obstacles. (f) The training corridor includes two hallways of obstacles. (g) The testing corridor with three hallways. Hatched lines indicate 1 m distances. The exact location of the obstacles is represented with a different symbol for each obstacle type. (h) The different obstacle types.
