jm + sight   3

The mysterious syndrome impairing astronauts’ sight - The Washington Post
Visual impairment intracranial pressure syndrome (VIIP) is named for the leading theory to explain it. On Earth, gravity pulls bodily fluids down toward the feet. That doesn’t happen in space, and it is thought that extra fluid in the skull increases pressure on the brain and the back of the eye.
viip  sight  eyes  space  zero-gravity  health 
july 2016 by jm
seeing into the UV spectrum after Cataract Surgery with Crystalens
I've been very happy so far with the Crystalens implant for Cataract Surgery [...] one unexpected/interesting aspect is I see a violet glow that others do not - perhaps I'm more sensitive to the low end of the visible light spectrum.


(via Tony Finch)
via:fanf  science  perception  augmentation  uv  light  sight  cool  cataracts  surgery  lens  eyes 
june 2013 by jm
The Neurocritic: Fisher-Price Synesthesia
'Synesthesia [jm: sic] is a rare perceptual phenomenon in which the stimulation of one sensory modality, or exposure to one type of stimulus, leads to a sensory (or cognitive) experience in a different, non-stimulated modality. For instance, some synesthetes have colored hearing while others might taste shapes. GRAPHEME-COLOR SYNESTHESIA is the condition in which individual printed letters are perceived in a specific, constant color. This occurs involuntarily and in the absence of colored font. [...] A new study has identified 11 synesthetes whose grapheme-color mappings appear to be based on the Fisher Price plastic letter set made between 1972-1990.'

(via Dave Green)
fisher-price  synesthesia  synaesthesia  colors  colours  sight  neuroscience  brain  via-dave-green  toys 
january 2013 by jm

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