Blindsight
Blindsight is a condition superficially resembling blindness. The difference is that a person experiencing blindsight, although not consciously able to see, is still aware of objects in his field of vision (see subconscious mind). This can be tested--when told to pick up an object in front of him, the person will hold his hand differently while reaching for a coffee cup and reaching for a tennis ball.Blindsight may also be experienced by healthy people when attention is elsewhere or the image happens too fast for them to become aware of it. The fact that a person will see it without being aware of having seen it can be exploited by advertisers as a form of subliminal messaging.
A person experiencing blindsight can be said to be lacking visual qualia.
A java applet about blindsight is available on the web here (http://serendip.brynmawr.edu/bb/blindsight.html).
Helena, to whom legend.html">legend.html">legend.html">legend ascribes the discovery of the
land or sea.html">sea, and his predecessor, Muselinus, is altogether unknown to
page of the Arabian Nights than of Gibbon.
But such a legend could scarcely have arisen elsewhere than at
have at all times invented to solace themselves for their
heights of power occurs sufficiently often to afford material for the
attribute a lowly origin to all favourites of fortune, as witness the
Whittington, Wolsey, none of whom was as ill-born as popular
country of their heroes, which is the only one sufficiently
concerned. Hence the very nature of our story.html">story would cause us to
it may take. Curiously enough, the very legend before us in all its
Baring-Gould collected in Yorkshire a story which he contributed to
and the ring.html">ring.html">Ring. {2} In this legend a girl.html">girl comes as the unwelcome sixth
Minster. A Knight, riding by on the day of her birth, discovers, by
son. He offers to adopt her, and throws her into the River Ouse. A
the Knight, who learns what Fate has still in store for his son. He
him to put her to death. But on the way she is seized by a band of
Baron's son to be married to her immediately on her arrival.
When the Baron discovers that he has not been able to evade the
ring from his finger throws it into the sea, saying that the girl
wanders about and becomes a scullery-maid at a great castle, and one
fish she finds his ring, and all ends.
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