The interaction between critical flicker frequency and acoustic stimulation

Summary

In an experiment reported by Ogilvie it was found that binocular CFF was significantly increased when measurements were taken while S was listening to a random noise “fluttering” in-phase with flickering light. A replication using monocular vision and an artificial pupil under the four conditions of Ogilvie’s experiment—no noise, steady noise, in-phase noise and out-of-phase noise—yielded negative results. A second study was carried out involving a comparison of the effect of noise on CFF with monocular vision but with and without the artificial pupil. A partial replication of Ogilvie’s results were obtained without the artificial pupil. These results seem to require caution in theorizing about possible neural mechanisms for the sensory interaction thus demonstrated.