The critical flicker fusion (CFF) is the lowest frequency of a - TopicsExpress

The critical flicker fusion (CFF) is the lowest frequency of a flickering light that is perceived to be a constant light. Some refer to this as the refresh time necessary to process visual information. For humans, this period of CFF is 60Hz or 60 times a second. This is the same refresh time for the image on a TV screen so we see it as a constant image rather than a series of images that are occurring at 60 images per second. Dogs have a CFF of 80Hz. When they watch TV is like watching a group of rapidly changing still photographs. This is why most dogs do not enjoy watching TV. This may be bad news for the DOGTV people.

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