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- Newsgroups: sci.cryonics
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!att!cbnewsl!kqb
- From: kqb@cbnewsl.cb.att.com (kevin.q.brown)
- Subject: Re: Just My Brain?
- Organization: AT&T Bell Laboratories
- Date: Thu, 30 Jul 1992 16:50:09 GMT
- Message-ID: <1992Jul30.165009.23824@cbnewsl.cb.att.com>
- References: <1992Jul28.224816.3265@hyper.hyper.com>
- Lines: 61
-
- > For you folks that are already members of a Cryonic Institute,
- > have you arranged to have only your brain (i.e head) frozen,
- > or your entire body? Alcor charges roughly 3 times as much
- > for whole body suspension and makes a case for regeneration
- > of one's body from the preserved DNA. Just curious to see if
- > there is a consensus.
-
- Paul,
- Neuro vs. whole-body is a matter of personal preference. I have appended
- below some text I wrote about the topic in 1988. Since then the situation
- may have changed somewhat. For example, the new "big foot" dewars
- can store not only several whole-body patients but also, in between them,
- several neuros, too. This may change the "mobility" argument in favor
- of neurosuspension.
- An issue I neglected to mention in 1988 is that the choice is also
- technology-dependent. Even if the technology favors neurosuspension
- today (which some people dispute), as suspension techniques improve
- and cause less injury, the favored technology may shift toward
- whole body. At that point it may become faster and more economical
- to fix the original body than to build a new one from scratch.
- - Kevin Q. Brown
- -----
- An undisputed advantage of the neuro option (over whole body) is cost,
- both for suspension and for maintenance (liquid nitrogen required to
- remain frozen). Another advantage is the quality of perfusion with
- cryoprotectants attained during suspension. Each organ has its own
- optimal perfusion protocol and when the suspension can concentrate on
- the head only, the quality of perfusion of the brain does not have to
- be compromised to attain better perfusion of other parts of the body.
- Another important advantage of the neuro option is mobility. Whole
- body suspendees are stored in large, bulky containers that are hard to
- transport whereas the neuro suspendees are stored in a concrete vault
- on wheels that can be quickly hauled away in case of fire or other
- emergency. (Also, if necessary, they can be removed from the large
- vault and transported in smaller units that fit into a van.)
-
- An obvious disadvantage of the neuro option is bad PR; it sounds
- gruesome. Also, one would think that revival (as a whole,
- functioning, healthy human being) when only your head was preserved
- would be more difficult than if your entire body was preserved.
- However, the whole body situation may not be that much better. Mike
- Darwin of Alcor noticed several years ago, when examing two suspended
- people being transferred from another organization to Alcor, that
- every organ of their bodies suffers cracking from thermal stress
- during freezing. In particular, the spinal cords suffered several
- fractures. Thus, the whole bodies were not quite as "whole" as most
- people assumed. Another reason that a whole body may not offer much
- more than the head alone is that the technology required to revive
- people from (whole or neuro) cryonic suspension should also be able to
- clone bodies, which is much simpler than fixing damaged cells. One
- possible objection to this approach of recloning a body to attach to
- the head was voiced by Paul Segal of ACS (in the April 1988 issue of
- The Immortalist). He suggested that adult cells in the head may be
- missing some of the DNA needed to reclone the remainder of the body.
- Even if this objection is valid, it is easy to circumvent by storing
- samples of all the major organs with the preserved head (which is
- standard practice at Alcor).
-
- See the booklet "Neuropreservation: Advantages and Disadvantages"
- published by Alcor for a more thorough discussion.
- -----
-