home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: alt.cyberpunk.tech
- Path: sparky!uunet!utcsri!psych.toronto.edu!dstampe
- From: dstampe@psych.toronto.edu (Dave Stampe)
- Subject: Re: How to read eye-movement ?
- Message-ID: <1992Dec21.215826.26167@psych.toronto.edu>
- Organization: Department of Psychology, University of Toronto
- References: <1992Dec21.114807.26970@wega.rz.uni-ulm.de>
- Date: Mon, 21 Dec 1992 21:58:26 GMT
- Lines: 33
-
- S_BLEYER@rzmain.rz.uni-ulm.de (Mike Bleyer) writes:
- >
- >Does anyone know of some kind of goggles, glasses or the like, that offer a
- >mechanism to read the direction that my eye is looking (up, down, left
- >right). I know there is a way reading left/right from the electric
- >potential between electrodes fixed to the middle of your forehead and the
- >sides (amplified muscle and nerve action). But up and down is somewhat
- >difficult/impossible.
-
- That's the electrooculographic technique (EOG). Lots of problems other
- than the lack of vertical measurement, such as drift.
- >
- >Is there any device that does this, for example low powered laser reading
- >the movement from reflections of the eyeball or whatever...
- >Anyone worked with something like this ?
- >Where to get it ? Prices ?
- >Any ideas, new and old, welcome...
- >
- Major techniques: camera pointed at the eye, extract pupil position or
- reflection of a light source off the cornea. Alternatively, put a couple
- of phototransistors near the eye, to monitor the approximate position of
- the iris. This last has problems with vertical as well, be cause of the
- eyelids.
- Costs: $2000+ for the iris techniques, $10000+ for the video camera techniques.
- Cost should go down in the future.
-
-
- --------------------------------------------------------------------------
- | My life is Hardware, | Dave Stampe |
- | my destiny is Software, | dstampe@psych.toronto.edu |
- | my CPU is Wetware... | dstampe@sunee.uwaterloo.ca |
- | Am I a techno-psychologist, or just an engineer dabbling in psychology?|
- ---------------------------------------------------------------------------
-