RE: Color vision in gorillas

["Lucans, Gunars" <gunars@xxxxxxxx>]

Title: RE: Color vision in gorillas

Perhaps they can discern even more than 2.3 million and just got sick of M&Ms and gave up :-).

Gunars

> -----Original Message-----
> From: Paul D. DeRocco [mailto:pderocco@ix.netcom.com]
> Sent: Saturday, March 09, 2002 6:27 PM
> To: scan@leben.com
> Subject: RE: Color vision in gorillas
>
>
> They probably put them in a small dark booth or box with a
> display that can
> show different color patches, and that has touch sensors.
> They show a bunch
> of colors, all of which are the same except for one which is
> very different,
> and train the animal to touch the different color, rewarding
> it with an M&M
> or something. They then gradually reduce the differences in
> color until the
> animal is no longer able to pick the different color. They've
> been doing
> tests like that for decades.
>
> --
>
> Ciao,               Paul D. DeRocco
> Paul                mailto:pderocco@ix.netcom.com
>
> > From: Preston Earle
> >
> > "Arthur Entlich" <artistic-1@shaw.ca> wrote: "Most higher primates
> > (including humans) can see somewhere in the area of  2.3 million
> > discernible colors."
> >
> > Boy, I'd love to see how they ran that experiment!
>
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