Head tip, cue to object elevation and location: implications for the blind.
Sighted subjects can accurately direct a light-beam source mounted on their head to the position of their hand on a vertical or horizontal scale by tipping their head in the up-down dimension. A blind person might be trained to utilize head-tip cues for location of objects in space. If he scanned his environment vertically (by tipping his head) with a horizontal inear array of photosensitive elements, presence of an object at a given position and elevation could be signalled to him by a small light attached to the object.
D000161:Acoustic Stimulation; D001766:Blindness / Q000534:rehabilitation*; D003463:Cues; D004215:Distance Perception; D006257:Head; D006801:Humans; D009068:Movement; D009949:Orientation; D013028:Space Perception