The explanation on the page listed by Chuck Huffman seems best to me.
Would it be correct in supposing, then, that the phenomenon basically is a
sort of apparent motion percept? If so, is the lack of reafferent feedback
part of the explanation even necessary?
My students will be very happy about this.
Thank you all very much.
------------
Faith,
Take a look at:
http://quark.fe.up.pt/mirror/www.exploratorium.com/snacks/bronx_cheer_bulb.h
tml
Your student is referring to the "Bronx Cheer," or "rasberry" in some
circles. You can demonstrate it easily by looking at your monitor, then:
1) Stick your tongue part way through your lips, 2) keep your lips sealed
around your tongue, and; 3) blow air. The screen will "wiggle." The only
thing moving is you.
Chuck
****************************
Charles M. Huffman, Ph.D.
Chair, Psychology Department
Cumberland College, Box 7990
Williamsburg, KY 40769
(606) 539-4422
****************************
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On
Behalf Of Faith L Florer
Sent: Thursday, November 04, 1999 8:24 AM
To: [EMAIL PROTECTED]
Subject: perception question
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
