Fig. 1From: Enhancing general spatial skills of young visually impaired people with a programmable distance discrimination training: a case control studya. Example of a trial of the line scanning test of the Haptic-2D test battery. b. Examples of tactile images used in the distance discrimination training with a programmable tactile display with different number of squares drawn at pseudorandom locations. Red and green lines indicate the minimum (dmin) and the maximum (dmax) distance between squares, respectively. c. Child performing the line scanning test of the Haptic-2D test battery. d. Adolescent performing the distance discrimination training with the programmable tactile displayBack to article page