tag:blogger.com,1999:blog-6756434140794129886.post3852767691832758967..comments2023-07-13T20:45:46.860-07:00Comments on Knowing Humans: Why Age Of Em Will Not Happen SoonBrian Holtzhttp://www.blogger.com/profile/18284822676116941984noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-6756434140794129886.post-59420177139790261732021-05-23T08:49:07.354-07:002021-05-23T08:49:07.354-07:00You can stop the brain to the point of not shiowin...You can stop the brain to the point of not shiowing an EEG and not requiring blood flow for more than an hour. Here are two references:<br /><br />https://www.annalsthoracicsurgery.org/article/S0003-4975(10)64766-2/pdf<br /><br />https://www.jtcvs.org/article/S0022-5223(19)39462-0/pdf<br /><br />There are lots of references to this technique, which became popular during heart surgery in the 1980s.Carl Feynmanhttps://www.blogger.com/profile/14222821389839996877noreply@blogger.comtag:blogger.com,1999:blog-6756434140794129886.post-30380671024106446012016-07-11T14:42:04.594-07:002016-07-11T14:42:04.594-07:00I'm skeptical that we know that cold brains ha...I'm skeptical that we know that cold brains have actually "stopped". The brain seems unlikely to be stoppable/restartable like e.g. the heart, or a seed, or a spore. I'd appreciate citations of efforts to measure the complete absence of synaptic activity in cold brains.Brian Holtzhttps://www.blogger.com/profile/18284822676116941984noreply@blogger.comtag:blogger.com,1999:blog-6756434140794129886.post-44029019411049690322016-07-11T14:28:26.615-07:002016-07-11T14:28:26.615-07:00Real human brains have ceased all activity, such a...Real human brains have ceased all activity, such as after being made cold, and then started up again and worked fine. So we know we don't need to scan/save activity. Robin Hansonhttps://www.blogger.com/profile/18396528456436940972noreply@blogger.com