Lifespan of the brain, cyborgs and Cryonics?
1. If the brain was sustained outside the body, how long can it survive?
2. In your opinion how long will science take until that time being able to replace every single body part near a 'better' alternative (excluding the brain).
3. Is there a way or any research being done for ways of reviving the body after person frozen?
Answers:
(1) This is a hypothetical question about something that I don't think is possible at present. So it is a ask that will be dependent on future technology to implement. How long the brain will survive will depend upon the technology being used to keep it alive. Currently, the brain dies when the heart stops. Under the brain-in-a-vat scenario near would be no sudden cessation of blood flow, and so the brain would gradually age and become dysfunctional. This process would probably take much longer than a normal human lifespan, probably as much as two centuries.
(2) You ask for my opinion, so I would say within 70 years. The answer would be dependent upon what you aim by "body part". I don't think that it will take too long for stem cells to be used to grow increasingly larger body parts. Then the stem cell will be genetically altered in such a way as to produce better body parts. Alternatively, non-biological materials can be used to produce artificial organs that can be introduced into the body.
(3) No mammal has ever be cooled to cryogenic temperatures (below –150 °C or –238 °F) and revived, but cryonics advocates do not claim that this is currently possible. Cryonics is dependent on future technology surrounded by order to work.
Cryonics attempts to use cryogenic temperatures to preserve brain structure without injure. Rather than freezing, body water is replaced by anti-freeze compounds. Body tissues are best preserved if a team of people can be standing by the bedside of a terminal personality and begin cooling and restoration of circulation immediately following legal pronouncement of annihilation. After initial cooling to near-zero temperature, cryonics organizations replace body water next to anti-freeze (vitrification) compounds to prevent ice damage. Then the cryonics subject is cooled to liquid nitrogen warmth, where they can remain essentially unchanged for thousands of years. Studies on dogs subjected to similar procedures as would be performed on humans underneath ideal circumstances show excellent preservation of fine structure of the brain.
Even with good preservation of body tissues by cooling and vitrification, adjectives science will be required to cure presently incurable diseases and to rejuvenate elderly people to a youthful condition. Aging, disease, and damage due to cooling low warmth are all potentially things that can be repaired by nanotechnology and other future molecular repair technologies. Cryonics will work singular when future medicine has mastered these repair technology. It seems inevitable, with the progress of science, that these repair technologies will come to exist.
The current prominence of cryonics-related research is on improving preservation methods (especially vitrification rather than freezing). If cryopreservation methods are enhanced enough, then reanimation will be simple. But revival will not be of much use until all diseases hold been cured and rejuvenation is possible. Molecular repair technologies, probably including nanotechnology and nanomedicine, will be required to revive people mortal cryopreserved with current methods. Much progress will be needed in nanotechnology and nanomedicine before focused research on body revival will be possible. Source(s): http://en.wikipedia.org/wiki/Brain_trans…
http://en.wikipedia.org/wiki/Brain-in-a-…
http://en.wikipedia.org/wiki/Artificial_…
http://en.wikipedia.org/wiki/Bionics
http://en.wikipedia.org/wiki/Cryonics
http://en.wikipedia.org/wiki/Rejuvenatio…
http://en.wikipedia.org/wiki/Vitrificati…
http://en.wikipedia.org/wiki/Nanomedicin…
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2. In your opinion how long will science take until that time being able to replace every single body part near a 'better' alternative (excluding the brain).
3. Is there a way or any research being done for ways of reviving the body after person frozen?
Answers:
(1) This is a hypothetical question about something that I don't think is possible at present. So it is a ask that will be dependent on future technology to implement. How long the brain will survive will depend upon the technology being used to keep it alive. Currently, the brain dies when the heart stops. Under the brain-in-a-vat scenario near would be no sudden cessation of blood flow, and so the brain would gradually age and become dysfunctional. This process would probably take much longer than a normal human lifespan, probably as much as two centuries.
(2) You ask for my opinion, so I would say within 70 years. The answer would be dependent upon what you aim by "body part". I don't think that it will take too long for stem cells to be used to grow increasingly larger body parts. Then the stem cell will be genetically altered in such a way as to produce better body parts. Alternatively, non-biological materials can be used to produce artificial organs that can be introduced into the body.
(3) No mammal has ever be cooled to cryogenic temperatures (below –150 °C or –238 °F) and revived, but cryonics advocates do not claim that this is currently possible. Cryonics is dependent on future technology surrounded by order to work.
Cryonics attempts to use cryogenic temperatures to preserve brain structure without injure. Rather than freezing, body water is replaced by anti-freeze compounds. Body tissues are best preserved if a team of people can be standing by the bedside of a terminal personality and begin cooling and restoration of circulation immediately following legal pronouncement of annihilation. After initial cooling to near-zero temperature, cryonics organizations replace body water next to anti-freeze (vitrification) compounds to prevent ice damage. Then the cryonics subject is cooled to liquid nitrogen warmth, where they can remain essentially unchanged for thousands of years. Studies on dogs subjected to similar procedures as would be performed on humans underneath ideal circumstances show excellent preservation of fine structure of the brain.
Even with good preservation of body tissues by cooling and vitrification, adjectives science will be required to cure presently incurable diseases and to rejuvenate elderly people to a youthful condition. Aging, disease, and damage due to cooling low warmth are all potentially things that can be repaired by nanotechnology and other future molecular repair technologies. Cryonics will work singular when future medicine has mastered these repair technology. It seems inevitable, with the progress of science, that these repair technologies will come to exist.
The current prominence of cryonics-related research is on improving preservation methods (especially vitrification rather than freezing). If cryopreservation methods are enhanced enough, then reanimation will be simple. But revival will not be of much use until all diseases hold been cured and rejuvenation is possible. Molecular repair technologies, probably including nanotechnology and nanomedicine, will be required to revive people mortal cryopreserved with current methods. Much progress will be needed in nanotechnology and nanomedicine before focused research on body revival will be possible. Source(s): http://en.wikipedia.org/wiki/Brain_trans…
http://en.wikipedia.org/wiki/Brain-in-a-…
http://en.wikipedia.org/wiki/Artificial_…
http://en.wikipedia.org/wiki/Bionics
http://en.wikipedia.org/wiki/Cryonics
http://en.wikipedia.org/wiki/Rejuvenatio…
http://en.wikipedia.org/wiki/Vitrificati…
http://en.wikipedia.org/wiki/Nanomedicin…
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