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Hi Richard,<br>
<br>
you raise many good points which I agree with and agreed with when I
read and edited your chapter. <br>
<br>
(Btw the actual Reference is : Loosemore, R.P.W. & Harley,
T.A. (2010). Brains and Minds:? On the Usefulness of Localization
Data to Cognitive Psychology. In SJ Hanson & M. Bunzl (Eds.),
Foundational Issues in Human Brain Mapping.<br>
Cambridge, MA: MIT Press--. just for the record)<br>
<br>
Clearly single cell recording or even an average voxel with 14
million neurons that are response to say "faces", should not be
prima facie evidence for a "face area" or "face concept area" or
"face category/intension area of the brain". <br>
<br>
I am unclear what you mean by "symbol" tho in this context. Virtual
concepts seems to be a fine way of thinking of conceptual function,
but still needs some sort of brain mechanism--no?<br>
<br>
I think DL models are likely to provide some more options for what
you describe as a "virtual concept". The scale of these systems
make them difficult to characterize in some principled way. 100s
of layers, 100s of millions of weights 100s of thousands of hidden
units.. this is simply a qualitatively different type of
representational system then what we were dealing with 30 years ago.<br>
<br>
One recent paper on concept representation and DL you might find
interesting:<br>
<a class="moz-txt-link-freetext"
href="https://www.frontiersin.org/articles/10.3389/fpsyg.2018.00374/full">https://www.frontiersin.org/articles/10.3389/fpsyg.2018.00374/full</a><br>
<br>
Steve Hanson
<pre class="moz-signature" cols="72">--
Stephen José Hanson
Professor
Director RUBIC (University-Wide)
Department of Psychology (NK)
Cognitive Science Center (NB)</pre>
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