--- Vladimir Nesov <[EMAIL PROTECTED]> wrote: > On Sun, May 4, 2008 at 11:04 PM, Matt Mahoney <[EMAIL PROTECTED]> > wrote: > > > > The retina uses low level feature detection of spots, edges, and > > movement to compress 137 million pixels down to 1 million optic > nerve > > fibers. By the time it gets through the more complex feature > detectors > > of the visual cortex and into long term memory, it has been > compressed > > down to 2 bits per second. > > > > Matt, this requires a reference explaining what you mean, for it to > not be nonsense. E.g. if the signal you get is 2 bit per second, you > can't detect which one of 1000 possible objects you see if you > observe > it for one second (that would take 10 bits). When you consider > attention-directed sampling, much of the initial megabit per second > becomes available. Another question is how much of it all is retained > in memory or can be attended at any single time, but it becomes > tricky > very fast, you'll be forced to make too many assumptions about the > semantics of what's going on during neural processing.
http://www.merkle.com/humanMemory.html I should qualify that this includes only high level memory (ability to recall photos, rather than ability to recognize objects) and that short term memory speed is somewhat higher. -- Matt Mahoney, [EMAIL PROTECTED] ------------------------------------------- agi Archives: http://www.listbox.com/member/archive/303/=now RSS Feed: http://www.listbox.com/member/archive/rss/303/ Modify Your Subscription: http://www.listbox.com/member/?member_id=8660244&id_secret=101455710-f059c4 Powered by Listbox: http://www.listbox.com
