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Will someone report to have received a hemispherectomy for the purpose of life extension before 2100?
A hemispherectomy is
a very rare neurosurgical procedure in which a cerebral hemisphere (half of the brain) is removed, disconnected, or disabled. This procedure is used to treat a variety of seizure disorders where the source of the epilepsy is localized to a broad area of a single hemisphere of the brain, notably Rasmussen's encephalitis. [...]
Because of the dramatic alteration of brain composition and the inherent risk that hemispherectomies pose, there are criteria that must be met in order for a person to qualify for the procedure. Criteria include no successful control of seizures throughout a variety of drug trials, and a reasonable to high chance of procedural success.
One such predictor of success is often the age of the patient. This procedure is almost exclusively performed in children because their brains generally display more neuroplasticity, allowing neurons from the remaining hemisphere to take over the tasks from the lost hemisphere. [...]
The success of the procedure is not, however, limited to children. A study in 2007 indicated the long-term efficacy of anatomic hemispherectomy in carefully selected adults, with seizure control sustainable over multiple decades. A case study published in 2015 of 2 adults aged 48 and 38 demonstrated the success of functional hemispherectomy in treating status epilepticus (SE), an epileptic condition in which seizures are prolonged or occur closely together. In 2012, a case study following 30 individuals having undergone some form of hemispherectomy in adulthood found that 81% of individuals were seizure free post-procedure. Furthermore, almost all participating patients reported improved quality of life. The conclusion: “adult patients do not have to expect more problems with new deficits, appear to cope quite well, and most profit from surgery in several quality of life domains.”
While hemispherectomies are generally reserved as a treatment for extreme cases of seizure disorders, they could conceivably aid in life extension as well. In particular, a patient could voluntarily receive a hemispherectomy in order to cryopreserve and put their brain in long-term storage while they are still living, thereby increasing the probability that their personality and identity are stored in some sort of medium, persisting into the future.
So far as I can tell, a hemispherectomy performed for the purpose of life extension is purely hypothetical. Furthermore, there are few to no current online resources about this possibility (besides this one).
This question asks, will someone report to have received a hemispherectomy for the purpose of life extension before 2100?
Here the resolution is determined by the conjunction of three actions, performed by an individual human:
They received a hemispherectomy voluntarily.
Half of their brain was placed in long-term cryopreservation while they were still legally alive.
They reported in some credible source (such as through a media outlet, or via a forum with strong evidence of credibility) that the procedure was done primarily for the purpose of extending their life.
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