Neural Representations of Trajectories

Brian zhil at online.no
Mon Jul 23 12:55:06 EST 2001


"Robert Gurk" <bob.g at gmx.de> skrev i melding
news:Xns90E7683936F53robertgurkatgmxde at 130.133.1.4...
> On 22 Jul 2001, Harry Erwin wrote:
>
> > Take a look at Avis Cohen's work.
> > <http://www.life.umd.edu/biology/faculty/cohen/index.html>
> >
> > One nice thing about bat work is that the motor models are
> > fairly simple.
> >
> > My question is basically: now that I'm fairly confident that
> > bats retain past position measurements in their trajectory
> > representation, and that those position measurements are in
> > general (3D+time) rather than head-centered or body-centered
> > coordinates, and that the trajectory representation can be
> > used in assessing nearness, how does a wet network that is
> > approximately 2D do all this?????
> >
>
> Wait a minute. If the position measurements are neither head nor
> body-centered, how are they centered? There must be some point
> (0,0,0), right? And object-centered coordinates would not be
> very useful if the object is, say, a fly.
> One more question: The wet network you are referring to, is
> related to hearing, I guess?

It would seem that the neural positioning-system
would have the brain as the center, more specific the vestibular
apparatus and the semicircular canals..........

Brian

> I can offer two more links:
>
> <http://www.ruhr-uni-bochum.de/neurobiol/mitarbei/klaus-
> peter_hoffmann/e_publik.htm>
>
> and
>
> <http://www.ruhr-uni-
> bochum.de/neurobiol/mitarbei/markus_lappe/e_publik.htm>
>
> HTH,
>
> Bob
>





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