Title :
Sensory Motor Responses in Virtual Environments: Studying the Effects of Image Latencies for Target-directed Hand Movement
Author :
So, Richard H Y ; Chung, German K M
Author_Institution :
Comput. Ergonomics Res. Team, Hong Kong Univ. of Sci. & Tech.
fDate :
6/27/1905 12:00:00 AM
Abstract :
Image latencies occur when a virtual environment (VE) responds to hand movements of its operator. A study has been conducted to investigate the effects of, and interactions among, hand movement related image latencies, target distance, and target width on discrete manual control tasks in a VE. In the presence of latencies, completion times of hand movement tasks have been found to obey Fitts´ law. Significant interactions were found between the effect of latency and target width, but not between the effect of latency and target distance. Results suggest that, in the presence of hand movement-related image latencies, the effects of target width and target distance should not be analyzed as a combined single effect of ´index-of-difficulty´
Keywords :
biomechanics; user interfaces; virtual reality; Fitts law; discrete manual control tasks; image latencies; sensory motor responses; target distance; target width; target-directed hand movement; virtual environments; Delay; Displays; Human factors; Image analysis; Intrusion detection; Partial response channels; Position measurement; Rendering (computer graphics); Virtual environment; Virtual reality;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1615599
