Abstract
Finger pointing is used to cue an interesting object or position. In this study, we evaluated the area size designated by finger pointing using a visual search task. In general, a target is detected faster when it was cued by any method, including finger pointing. Experiment 1 revealed that observers conduct a visual search faster when the target position is specified by pointing, than in a no-cue condition. The improvement using pointing was comparable to that by conventional cueing with a line segment. In Experiment 2 the stimulus display was physically delimited by line frames to reduce the number of stimulus items to undergo a visual search. The data were compared to those from Experiment 1 to obtain the actual limitation realized by pointing. This analysis suggested that the observers' attention was limited to within 10 to 15 degrees radius by the effect of pointing..
