An open forum for BIO365R
Posted in Techniques, Vision on Oct 14th, 2009
(submitted by AJ) Colour blindness can cause mild perturbation in a person’s daily life, but there are cases where it has led to fatal mistakes. However, there are degrees to colour blindness, and many are unaware that they are failing to see certain hues at all. Mark Twain and Bill Clinton [...]
Posted in Perception, Vision on Jun 24th, 2009
Do these lines look like they extend away from you at different angles? Actually, they’re exactly the same. You brain is fooling you…again! For more information and a few other examples of this illusion, click here.
Still trust your perception? Maybe this will change your mind. Here is the 2009 winner of the Best Visual Illusion [...]
Posted in Perception, Vision on Jan 23rd, 2008
Magicians exploit the fact that we often don’t pay attention to what is going on around us. Even though our eyes take in everything and faithfully report what they see, the brain simply must choose what to focus on. There is too much out there to take it all in and process it. [...]
Posted in Vision on Oct 18th, 2007
The sense of depth perception is critical to the survival of hunters such as cats and birds of prey such as hawks and owls. The initial visual processing for this occurs in lateral geniculate nucleus. While there is retinal input to the many layers of the LGN, the vast majority arrives as “feedback” [...]
This is not another edition of Weekly World News, but a rather wonderful story of a boy, blinded by cancer, that developed the ability to echolocate! Using a series of clicking sounds he is able to identify objects that are nearby, even making a distinction between a fire hydrant and a rubbish bin.
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Channel N – brain science videocasts Mind Hacks