[vslist] Orientation selectivity using fast feed-forward inhibition: paper
and Neuron simulation files
Arnaud Delorme
arno@salk.edu
Wed Dec 17 11:47:01 2003
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The following article
Delorme, A. (2003) Early Cortical Orientation Selectivity: How Fast
Shunting Inhibition Decodes the Order of Spike Latencies. /Journal of
Computational Neuroscience/, 15, 357-365. Author's PDF
<http://www.sccn.ucsd.edu/%7Earno/mypapers/Delorme2003.pdf>, journal's
link
<http://ipsapp008.kluweronline.com/content/getfile/4835/47/5/fulltext.pdf>.
and the associated Neuron simulation files (documented) are available at
http://www.sccn.ucsd.edu/~arno/model.html
---------------------------
Article abstract:
Following a flashed stimulus, I show that a simple neurophysiological
mechanism in the primary visual system can generate orientation
selectivity based on the first incoming spikes. A biological model of
the lateral geniculate nucleus generates an asynchronous wave of spikes,
with the most strongly activated neurons firing first. Geniculate
activation leads to both the direct excitation of a cortical pyramidal
cell and disynaptic feed-forward inhibition. The mechanism provides
automatic gain control, so the cortical neurons respond over a wide
range of stimulus contrasts. It also demonstrates the biological
plausibility of a new computationally efficient neural code: latency
rank order coding.
--
*Arnaud Delorme, Ph.D.*
Computational Neurobiology Lab, Salk Institute
10010 North Torrey Pines Road
La Jolla, CA 92037 USA
*Tel* : /(+1)-858-458-1927 ext 15/
*Fax* : /(+1)-858-458-1847/
*Web page *: www.sccn.ucsd.edu/~arno <http://www.sccn.ucsd.edu/%7Earno>
*To think upon*:
The longing to produce great inspirations didn't produce anything
but more longing.
/Sophie Kerr/
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The following article<br>
<br>
<font face="Arial,Helvetica">Delorme, A. (2003) Early Cortical
Orientation Selectivity:
How Fast Shunting Inhibition Decodes the Order of Spike Latencies. <i>Journal
of Computational Neuroscience</i>, 15, 357-365. <a
href="http://www.sccn.ucsd.edu/%7Earno/mypapers/Delorme2003.pdf"
target="_blank">Author's PDF</a>, <a
href="http://ipsapp008.kluweronline.com/content/getfile/4835/47/5/fulltext.pdf"
target="_blank">journal's link</a>.</font> <br>
<br>
and the associated Neuron simulation files (documented) are available at<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.sccn.ucsd.edu/~arno/model.html">http://www.sccn.ucsd.edu/~arno/model.html</a><br>
<br>
---------------------------<br>
<br>
Article abstract:<br>
<br>
Following a flashed stimulus, I show that a simple neurophysiological
mechanism in the primary visual system can generate orientation
selectivity based on the first incoming spikes. A biological model of
the lateral geniculate nucleus generates an asynchronous wave of
spikes, with the most strongly activated neurons firing first.
Geniculate activation leads to both the direct excitation of a cortical
pyramidal cell and disynaptic feed-forward inhibition. The mechanism
provides automatic gain control, so the cortical neurons respond over a
wide range of stimulus contrasts. It also demonstrates the biological
plausibility of a new computationally efficient neural code: latency
rank order coding.<br>
<br>
<div class="moz-signature">-- <br>
<br>
<b><font face="Arial,Helvetica"><font size="+1">Arnaud Delorme, Ph.D.</font></font></b>
<br>
<font face="Arial,Helvetica"><font size="+1"><font color="#3333ff">Computational
Neurobiology Lab,</font> <font color="#3333ff">Salk Institute</font></font></font>
<br>
10010 North Torrey Pines Road
<br>
La Jolla, CA 92037 USA
<p><font size="+1"><b>Tel</b> :</font> <i>(+1)-858-458-1927 ext 15</i>
<br>
<font size="+1"><b>Fax</b> : </font><i>(+1)-858-458-1847</i>
<br>
<b><font size="+1">Web page </font></b>: <a
href="http://www.sccn.ucsd.edu/%7Earno">www.sccn.ucsd.edu/~arno</a>
<br>
<font face="Arial,Helvetica"><b>To think upon</b>:</font></p>
<blockquote><dt><font face="Arial,Helvetica"> The longing to produce
great inspirations didn't produce anything but more longing.
<font size="-5"><br>
<br>
</font></font></dt>
<dd><font face="Arial,Helvetica"><i>Sophie Kerr</i></font></dd>
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