Finally, someone besides me noticed that. But my only explanation is carped
together. It would seem to be a vibratory frequency that there would not be
natural occurances of and thus our visual system isn't prepared, so to
speak, for what the jiggling means. i.e., it is a combination of the
resonance of the LEDs (a pretty slow refresh rate) and the speed at which
the visual system "updates" incoming information. I've never actually seen
an answer to that one in a textbook, I've asked three very competent
neurologists and they have little in the way of an answer (except one noted
that two of his post concussion patients said the jiggling had disappeared
temporarily right after their head injuries?!?!), and reviewed a lot of the
vision literature and I cannot find what I'd call a really good answer to
this one.
Tim
>Does anyone here know why it is that the numbers on a digital clock (and
>some images on a television screen) appear to jiggle when a person is
>using an electric toothbrush?
>
>I was asked this question in cognition class.
>
>Thank you.
>
>Faith Florer
>
>Faith Florer, Ph.D., Adjunct Asst. Professor Marymount College and NYU.
>http://www.river.org/~flf/Faith.html
_______________________________________________________
Timothy O. Shearon, PhD
Albertson College of Idaho
Department of Psychology
2112 Cleveland Blvd
Caldwell, Idaho
[EMAIL PROTECTED]
208-459-5840
