title: Free-looking time for randomly generated polygons with experimenter present: effects of content and duration of foreperiod.
mesh_terms: D001288:Attention; D003623:Dark Adaptation; D005133:Eye Movements; D005260:Female; D005403:Fixation, Ocular; D005556:Form Perception; D006801:Humans; D007398:Interpersonal Relations; D008297:Male; D010775:Photic Stimulation; D012683:Sensory Deprivation; D013997:Time Factors