random dot motion with variable coherence

1
Hi,
Does any one have a demo of random dot motion with variable
coherence. I'm after something using rand or the like to get a
nice dense dot array.
Thanks,
Al
2
A version of the Newsome/Movshon dots for the Mac OS9 version can be
downloaded from the psychtoolbox website:

http://heidegger.rprc.washington.edu/mike/software/dots/

A better link is:

http://www.shadlen.og/~mike/software/dots/

We have yet to migrate to OSX.

Also, you may need to play with dot density. The defaults are set to
the values in the papers.

Good luck,

Mike

Michael N. Shadlen, MD, PhD Tel: 206-616-4630
Howard Hughes Medical Institute, FAX: 206-543-1196
Dept. of Physiology and Biophysics
and Regional Primate Research Center Overnight mail:
University of Washington Health Science Bldg G424
Box 357290 1959 NE Pacific Street
Seattle, WA 98195-7290, USA

http://depts.washington.edu/pbiopage/faculty/shadlen.html
http://www.shadlen.org

Do not confine your children to your own learning,
for they were born in another time.
-Hebrew proverb


On Dec 6, 2004, at 6:07 PM, cursorescape wrote:

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> Hi,
> Does any one have a demo of random dot motion with variable
> coherence. I'm after something using rand or the like to get a
> nice dense dot array.
> Thanks,
> Al
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> Post your message to: psychtoolbox@yahoogroups.com
> Please indicate OS9, OSX, or WIN version, and include your full name.
> Denis Pelli, David Brainard, and Allen Ingling.
> http://psychtoolbox.org
>
> Yahoo! Groups Links
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