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I have a question

John Hasenkam johnh at faraway.hgmp.mrc.ac.uk
Wed Dec 29 20:59:42 EST 2004


There is a very rare condition when a person can no longer perceive
movement, only see a series of still shots. Don't know the name of the
condition, probably related to damage to the visual - parietal areas
(ventral stream?).


<behdadm at gmail.com> wrote in message
news:1104189924.193906.161060 at z14g2000cwz.googlegroups.com...
> Hi,
>
> I think you are wrong.
>
> "Handbook of Perception and Human Performance" page 16-8:
>
> "It is sometimes mistakenly claimed that the peripheral retina is more
> sensitive to motion than the fovea. In fact the threshold of motion
> increases steadily with eccentricity"
>
> Although the rods are more sensitive to motion than cones, there are
> many other factors that can influence the motion sensitivity of fovea
> and other parts of field of view. For example, each receptor is
> connected to one ganglion cell in the fovea, but at the periphery 25
> receptors are connected to 1 ganglion.
>
> What is your reference?
> Sorry but I didn't understand the meaning of "AoK, Ap6".
>
> Thanks
>





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