[Study in recognition on the face. Affects of eye movement on alternation of the facial appearance].
The following experiment was designed to investigate the affects of eye movements in visual performance on alternation of the facial appearance using Vision analyzer. Major concern in this study was whether a casual relationship between eye movements and alternation of the facial appearance could be established such that eye movements necessarily preceded an alternation of the stimulus perception. Nine students who did not have any dental education and three dentists were selected as subjects. Three stimuli were presented to subjects which were made of the full face photographic slide of adult male with two different vertical dimension of occlusion in complete upper and lower dentures and normal facial height. Subjects were first shown in the normal stimuli, then they were presented with different version of the stimuli and asked to record their percept. Tow condition of instructions were used which elicited different scanning patterns. The results were as follow 1. Evidence that individual differences in eye movement patterns were existed. 2. Before instruction, their eye movements in visual performance tend to be dispersed all over the face. 3. After instruction, they were able to clearly identify altered facial appearances with good understanding of anatomical facial form. 4. Dentists were able to evaluate the altered facial appearances focusing their anatomical knowledge. The present investigation has demonstrated that the study of eye movements scanning strategies involved in two-dimensional face comparison and recognition is fruitful area of research.
Honma
H
H
D005133:Eye Movements; D005149:Facial Expression; D006801:Humans; D014796:Visual Perception