Table 2.

Summary of the Experimental Setup

Experiment Name	No. of Response Choices	Range of Target Distances	Range of Distance Filter Settings	Target Description	No. of Trials
Depth discrimination	3	1, 3, and 6 m	<1.5 and <4 m	Person	60
Object localization	2	45–85 cm	<30 to <150 cm	Small foam cups	40
Orientation (single)	3	1 m	<125 cm	22”, 44” and 66” long and 6.5” wide foam boards	45
Orientation (double)	6	1 m	<125 cm	22”, 44” and 66” long and 6.5” wide foam boards	45
Size discrimination
(double)	3	1 m	<125 cm	22”, 44” and 66” long and 6.5” wide foam boards	45
Size discrimination (triple)	6	1 m	<125 cm	22”, 44” and 66” long and 6.5” wide foam boards	45
Direction of motion (people)	2	5–6 m	<536 cm	People	Range: 9–78
Direction of motion (escalator)	2	5–6 m	<536 cm	Escalator	10