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Title: Vision: Rods and Cones


jreid08 - November 3, 2005 12:11 PM (GMT)
Mods, if this is the wrong place for this or could be better served in a different section I'm sorry and please move.

I’ve been doing some reading/research on vision and learned something interesting. Our eyes are made up of what doctors refer to as “rods” and “cones.” Rods make up the vision of our peripheral and you see less to no color with the rods but you notice movement and outlines the most with rods. Cones make up the vision we use most of the time, when you’re looking at things head on and you also see color with the cones.

With the rods, you see less detail but you use it the most at night. At night or in darkness we all kind of look around objects, thus using our rods.

Now animals eyes are primarily, depending on the species, made up of rods which might explain why they see things we don’t since we depend on or use our cones more than the rods in our peripheral when there is light. This also might explain why we can’t see apparitions or shadow people most of the time but we always hear stories from folks stating that they always see it out of their peripheral vision. I’ve also heard stories of how people will use mirrors at their nose to assist them control their vision between the rods and cones during investigations at night or in darkness.

In addition to animals, this also explains why cameras pick up objects that we don’t see with our naked eyes. Cameras don’t use rods or cones, they simply pick up what’s there.

Have any of you researched this and perhaps are further along than I and have additional information that you can point me to? I’m kind of new at all of this and I’m trying to hone some basic scientific knowledge that is often not covered in school, or if it is, usually outside of practical application to assist you in understanding and using the knowledge in a field of interest to you.

I’m also interested in “hearing” sciences if you have any information on that.

Thanks everyone,
JR

Jim - November 12, 2005 05:24 AM (GMT)
very informative artical im glad to see you taking interest in this and i will happily pass along any info i find on the hearing sciences and i would be very interested to hear if you find anything out for yourself.




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