1983 Volume 2 Issue 2 Pages 39-45
Two experiments were conducted to investigate the probabilistic independency of the feature extraction for the multi-element visual display, In experiment I, subjects reported the number of dots which were displayed simultaneously for brief exposure time. In Experiment II, subjects answered whether all figures were the same or not, when they were shown simultaneously. The principal experimental variables were the number of items in the display and exposure duration. If the stimulus composed of N items was processed for 50%, and the features were extracted independently, each item must be processed for √^N<0.5>. From these experiments, it was concluded that features were extracted independently between items. Finally, we examined the probabilistic independency for the more complex display and several implications were discussed.
