title: How temporal frequency affects global form coherence in Glass patterns.
abstract: Glass patterns are textural moirés from random dots. Sequential presentation of Glass patterns induces a sense of illusory motion. We evaluated how changes in temporal frequency affected the detection of global form in Glass patterns. We found linear improvement in coherence thresholds with increasing temporal frequency (Experiment 1), particularly in stimuli with large dot-pair separations (Experiment 2). These results support the notion that temporal and orientation information sum to boost sensitivity to visually obscure objects, and are discussed within the framework of "motion streak" detectors.
authors: Department of Psychology, University of South Carolina, Columbia, SC 29208, United States.
authors: Annie M
authors: AM
authors: Day
authors: Department of Psychology, University of South Carolina, Columbia, SC 29208, United States. Electronic address: mcp@ski.org.
authors: Melanie
authors: M
authors: Palomares
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D005260:Female; D005556:Form Perception / Q000502:physiology*; D006801:Humans; D008297:Male; D009039:Motion Perception / Q000502:physiology*; D009903:Optical Illusions / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D012684:Sensory Thresholds / Q000502:physiology; D055815:Young Adult
keywords: Form perception; Glass patterns; Global integration; Illusory motion; Random dot kinematograms; Temporal frequency