home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!biosci!agate!ames!saimiri.primate.wisc.edu!usenet.coe.montana.edu!news.u.washington.edu!stein.u.washington.edu!venk
- From: venk@stein.u.washington.edu (Venkatesh Murthy)
- Newsgroups: bionet.info-theory
- Subject: Re: Animate Nature and Noise
- Keywords: info theory isothermal noise physical limit receptors
- Message-ID: <1k6igvINNeg0@shelley.u.washington.edu>
- Date: 27 Jan 93 17:58:55 GMT
- References: <1993Jan27.062112.13859@ncsu.edu>
- Organization: University of Washington, Seattle
- Lines: 50
- NNTP-Posting-Host: stein.u.washington.edu
-
- In article <1993Jan27.062112.13859@ncsu.edu> samodena@csemail.cropsci.ncsu.edu (S. A. Modena) writes:
-
- [a lot of stuff deleted.......]
-
- >
- >
- > ...Biophysical Principles of Sensory Transduction
- > Steven M. Block
- >
- >IN "Sensory TRansduction"
- > Society of General Physiologists Series Vol. 47 (46th Ann.
- >Symp.)
- > Edited by D.P. Corey & S.D. Roper
- > New York: Rockefeller University Press, 1991
- > ISBN 0-87470-051-5
- >
- >Steve
- >---
-
-
- This subject is quite fascinating. Much of the ideas that Steve Block
- talks about in that nice little review were presented in another review
- by Bill Bialek in 1987:
-
- Bialek, W. 1987. Physical limits to sensation and perception.
- Annual Reviews in Biophysics and Biophysical Chemistry. 16:455-478.
-
- Bialek's review is good, as is Block's. Both seem to be fascinated by
- tiny things in biology. Bialek has also done some nice stuff in the
- efficiency of information transfer (in the Shannon sense) in the fly
- visual system, frog sacculus. I can fish out the references if anyone
- is interested. He claims that in a lot of sensory systems, the coding
- is close to being maximally efficient given the noise and the statistics
- of naturally occurring stimuli. As for Block, I think he currently works
- on molecular motors. I believe they are attempting to use "optical
- tweezers" to hold on to microtubules and such to measure the force
- exerted by single motor molecules such as kinesin. Fascinating stuff...
- but I hardly have the background to expound on it :-) Maybe Tom or
- Steve or someone else would care to tell us a bit about it.
-
- I didn't intend this posting to be so fragmentary. Mostly it was to
- try and get people to start posting stuff again. Things have been
- uncomfortably quiet lately :-)
-
- -Venki Murthy
- Physiology & Biophysics
- Univ. of Washington
- Seattle, WA 98195
-
- venk@u.washington.edu
-