3 ms·

I think the brain would adapt. It may take a while but the brain is very flexible and adaptable.

qayxc 1y ago
According to research impaired structural brain development due to visual deprivation from birth is not fully reversible and limits functional recovery. So even if eye sight is fully restored, cortical function will not be able to fully take advantage of that. Experiments and studies have shown that this might be due to the fact that the visual cortex will take over a similar role in blind people as it does for people with intact eye sight. The brain uses different sensory inputs in that case and the visual brain structure is not restored after eye sight recovery. This is still an ongoing field of research of course, but so far congenital blindless seems to be incurable, regardless of whether the sensory apparatus could be restored or replaced. Note that this only means seeing like a non-blind person. Some limited visual perception is still possible, just not "normal" sight.
- mekoka 1y ago
  Do you have some links handy? I'd be very much interested in the description of experience from people that have gained sight after congenital blindness.
  - DetroitThrow 1y ago
    You might be interested in searching up "strong critical periods" in brain development - this phenomenon has been studied for decades and has interesting implications for lots of aspects of brain development: https://en.m.wikipedia.org/wiki/Critical_period https://en.m.wikipedia.org/wiki/Critical_period
kelseyfrog 1y ago
Depending on the task[1], it takes 1 week[2] to 1 year[3]. 1. https://news.mit.edu/2011/vision-problem-0411 https://news.mit.edu/2011/vision-problem-0411 2. Shape recognition 3. Face recognition
spondylosaurus 1y ago
Case studies suggest otherwise, at least for most people. https://www.newyorker.com/magazine/1993/05/10/to-see-and-not-see-oliver-sacks https://www.newyorker.com/magazine/1993/05/10/to-see-and-not...
- nsonha 1y ago
  don't have full article access but this part near the top makes it not applicable to the situation being discussed (blind from birth) > since early childhood
  - Timshel 1y ago
    In a way it strengthens it since even if he became blind later one, still: > It was, rather, the behavior of one mentally blind, or agnosic—able to see but not to decipher what he was seeing. And while he does get better, it does end up with: > But then, paradoxically, a release was given, in the form of a second and now final blindness—a blindness he received as a gift. Cf: https://web.archive.org/web/20240111185639/https://www.newyorker.com/magazine/1993/05/10/to-see-and-not-see-oliver-sacks https://web.archive.org/web/20240111185639/https://www.newyo... (older version does not trigger the paywall or at least can disable it while it's loading).
lynx97 1y ago
If you are young enough, yes. But after a while, the neuroplasticity is simply not enough. Seeing is a complex enough process, if you miss learning it in your childhood, the train is gone. This is a very common error people make, announcing implant technologies to grown blind people as if the cure was just around the corner. It isn't. You will never adapt to a point where the vision you just gained is actually useful. Imagine trying to learn to read print, at 30, with a pixelated implant? It is a naiv pixie dream of sighted people.

According to research impaired structural brain development due to visual deprivation from birth is not fully reversible and limits functional recovery. So even if eye sight is fully restored, cortical function will not be able to fully take advantage of that. Experiments and studies have shown that this might be due to the fact that the visual cortex will take over a similar role in blind people as it does for people with intact eye sight. The brain uses different sensory inputs in that case and the visual brain structure is not restored after eye sight recovery. This is still an ongoing field of research of course, but so far congenital blindless seems to be incurable, regardless of whether the sensory apparatus could be restored or replaced. Note that this only means seeing like a non-blind person. Some limited visual perception is still possible, just not "normal" sight.

mekoka 1y ago
Do you have some links handy? I'd be very much interested in the description of experience from people that have gained sight after congenital blindness.
- DetroitThrow 1y ago
  You might be interested in searching up "strong critical periods" in brain development - this phenomenon has been studied for decades and has interesting implications for lots of aspects of brain development: https://en.m.wikipedia.org/wiki/Critical_period https://en.m.wikipedia.org/wiki/Critical_period

kelseyfrog 1y ago

Depending on the task[1], it takes 1 week[2] to 1 year[3]. 1. https://news.mit.edu/2011/vision-problem-0411 https://news.mit.edu/2011/vision-problem-0411 2. Shape recognition 3. Face recognition

spondylosaurus 1y ago

Case studies suggest otherwise, at least for most people. https://www.newyorker.com/magazine/1993/05/10/to-see-and-not-see-oliver-sacks https://www.newyorker.com/magazine/1993/05/10/to-see-and-not...

nsonha 1y ago
don't have full article access but this part near the top makes it not applicable to the situation being discussed (blind from birth) > since early childhood
- Timshel 1y ago
  In a way it strengthens it since even if he became blind later one, still: > It was, rather, the behavior of one mentally blind, or agnosic—able to see but not to decipher what he was seeing. And while he does get better, it does end up with: > But then, paradoxically, a release was given, in the form of a second and now final blindness—a blindness he received as a gift. Cf: https://web.archive.org/web/20240111185639/https://www.newyorker.com/magazine/1993/05/10/to-see-and-not-see-oliver-sacks https://web.archive.org/web/20240111185639/https://www.newyo... (older version does not trigger the paywall or at least can disable it while it's loading).

lynx97 1y ago

If you are young enough, yes. But after a while, the neuroplasticity is simply not enough. Seeing is a complex enough process, if you miss learning it in your childhood, the train is gone. This is a very common error people make, announcing implant technologies to grown blind people as if the cure was just around the corner. It isn't. You will never adapt to a point where the vision you just gained is actually useful. Imagine trying to learn to read print, at 30, with a pixelated implant? It is a naiv pixie dream of sighted people.