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- From: blackman@hodgkin.med.upenn.edu (David Blackman)
- Newsgroups: comp.ai.neural-nets
- Subject: Re: Thanks Neural Nets, and Brains?
- Message-ID: <84336@netnews.upenn.edu>
- Date: 24 Jul 92 16:52:44 GMT
- References: <arms.711907358@spedden> <50783@dime.cs.umass.edu> <arms.711932483@spedden>
- Sender: news@netnews.upenn.edu
- Organization: University of Pennsylvania
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- In article <arms.711932483@spedden> arms@cs.UAlberta.CA (Bill Armstrong) writes:
- >First off, isn't it rather strange that the most widespread artificial
- >model of neural operation. the multilayer perceptron, uses continuous
- >quantities on its connections, while the dendrites and axons of
- >neurons use "zero or one" type action potentials?
-
- This doesn't take into account the fact the once an action potential
- reaches a synapse, it generates a postsynaptic EPSP. The capacitance
- of the membrane allows for analog summing of the the EPSP's and therefore
- gives an analog or continuous valued voltage at the postsynaptic
- membrane.
- --
- David Blackman
- blackman@hodgkin.med.upenn.edu
- (215) 898-3553
-
-