The Null Device

Posts matching tags 'blindness'

2004/12/16

Macular degeneration is an incurable disorder of the eye, affecting mainly elderly people and causing partial blindness. The curious thing about it is that, in some cases, sufferers see vivid hallucinations. (via MindHacks)

When Don was visiting the graveyard where his wife is buried, he sat for a while on a bench. He suddenly saw one end of the church on the far side of the cemetery become illuminated. Then there appeared great crowds of figures of both sexes and in all manner of dresses moving in a stately way towards the church this time they were not advancing towards him. They entered the large area of illumination and vanished.
A further visual effect which Don considered to be rather spectacular was the disappearance of people in front of him, especially presenters on stage in lecture situations. First the persons head would vanish and then the torso, yet Don would be able to see the background behind where the now invisible figure was standing with perfect, uninterrupted clarity.

It is speculated that the hallucinations, which are known as Charles Bonnet Syndrome, are caused by the brain attempting to fill the gaps in its input, interpolating the noise coming from malfunctioning eyes with past experience. Which, of course, happens all the time, except in normal circumstances, the input is more or less trustworthy. It is also believed that many more people suffer from the condition than would admit to it, lest others consider them to be going insane.

If such a condition is possible, it raises the question of how much of our everyday experience do we really get from our senses, and how much do our brains infer. I've seen the claim that the human eye's output is far too poor to give the vivid images we perceive, and much of our perception is the result of post-processing in the brain. Could the bulk of our perceived reality be hallucination, which, in normal conditions, happens to work usefully?

bizarre blindness hallucination neurology 0

2003/10/13

A new system allows the blind to see with sound. The vOICe system consists of a headset with a camera and headphones, which translates images into "highly complex soundscapes", which are then played over the headphones. I wonder what it sounds like, and how long until the sound-art scene latches onto this and shops like Synæsthesia start stocking CDs of 18-minute glacial noise sculptures which actually resolve to images when heard by an appropriately trained listener. (via FmH)

(Actually, I wonder how long until some troublemaker releases a double CD of a big-budget Hollywood blockbuster converted into vOICe soundscapes, just in the interest of testing the boundaries of art and copyright violation?)

blindness prosthesis synaesthesia 0

2003/7/30

The necktie is not only a serpentlike symbol of evil (or perhaps a relic of ancient symbolic sacrifices to the hangman god Odin, depending on whom you believe), it can also make you go blind.

blindness clothing neckties odin 0

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