Visual Cognition Demonstrations This page contains demonstrations of various experiments conducted by members of the Yale Perception & Cognition Laboratory. Except where otherwise noted, these demonstrations are provided as Quicktime movies, which can be downloaded or viewed directly in most web-browsers. (To download a free Quicktime player, go here.) These movies may a bit large and choppy, but they should be sufficient to illustrate the basic manipulations. If you have any trouble viewing the movies, downloading them and then playing them from your local hard-drive may help. Note that some movies must be 'looped' in order to be effective. As highly compressed versions of the original stimuli constructed for demonstration purposes, these movies may not preserve the precise spatial and temporal characteristics of the originals. The full references for the papers cited below in the brief descriptions can be found on my 'Papers' page or my 'Works in Progress' page. (By the way, this page contains demonstrations from our own research. If you're looking for a general resource for neat vision demonstrations, go here.) Motion-Induced Blindness Perceiving the disappearance of unseen objects in MIB Online parsing of objects and groups during MIB A functional 'perceptual scotoma' theory of MIB Further explorations of 'perceptual scotomas' in MIB Inattentional Blindness Spatial proximity in sustained inattentional blindness Featural similarity in sustained inattentional blindness Sustained inattentional blindness and the capture of awareness Change Detection An implicit measure of 'change blindness blindness' Multiple Object Tracking The basic MOT paradigm Tracking through occlusion What counts as an object in MOT? Tracking objects vs. substances Attentional concentration and amplification with MOT Attentional highbeams in tracking through occlusion during MOT Eye fixations during concentration and amplification effects in MOT Motion-maps and attention, explored with MOT (Coming soon) The Tunnel Effect The tunnel effect in rhesus macaques Measuring object persistence in the tunnel effect with change detection Spatiotemporal continuity vs. featural similarity in ventral visual cortex Object Files and Object Reviewing Object files and cohesion violations Object files during 'bouncing vs. streaming' displays Are objects required for object files? The Perception of Animacy and Causality Basic demonstrations of the perception of causality and animacy Causal capture: Contextual effects on causal perception Effects of grouping and attention on causal perception Illusory causal crescents Infants' causal perception: Effects of grouping and postdiction The psychophysics of chasing The wolfpack illusion (Coming soon) Statistical Perception Continuous perceptual averaging in time