title: Coherence of plaids comprising components of disparate spatial frequencies.
abstract: The limits of plaid coherence were measured in terms of the maximum spatial frequency difference between the components at which coherence is sustained, for a variety of contrasts and speeds. In some circumstances the maximum spatial frequency difference is between three and four octaves. This suggests that one-dimensional components of a moving image are not combined within spatial frequency channels to give overall pattern direction but that there is a pooling of information across spatial frequencies prior to the stage at which pattern direction is computed. Coherence range declines as contrast is decreased or drift speed is increased.
authors.affiliation: School of Psychology, University of Wales College of Cardiff.
authors.forename: A T
authors.initials: AT
authors.lastname: Smith
mesh_terms: D015350:Contrast Sensitivity / Q000502:physiology*; D006801:Humans; D009039:Motion Perception / Q000502:physiology*; D010364:Pattern Recognition, Visual / Q000502:physiology*; D013997:Time Factors