UNSPECIFIED
(2011)
From fMRI Data To Cognitive Models: Testing the ACT-R Brain Mapping Hypothesis with an Ex-Post Model.
In: Lenk, Jan Ch. and Möbus, Claus and Özyurt, Jale and Thiel, Christiane M. and Claasen, Arno, (eds.)
COGNITIVE 2011 - The Third International Conference on Advanced Cognitive Technologies and Applications.
IARIA, Rome, Italy, pp. 13-18.
ISBN 978-1-61208-155-7
Abstract
Recently, John R. Anderson proposed a correspondence
between the modules of his cognitive architecture
ACT-R and specific brain regions. This Brain Mapping Hypothesis allows the prediction of Blood-Oxygen-Level Dependent curves for these regions using cognitive models. These predictions may be compared to actual data from functional Magnetic Resonance Imaging experiments. While the Brain Mapping Hypothesis has been tested with very simple tasks mostly from algebraic problem solving, we conducted experiments with a more complex task to study the robustness of the Brain Mapping Hypothesis against different domains, multidimensional strategy spaces, and modeling errors. The ACTR model in this paper is a synthesis of our prior models, providing a better fit imaging data. Our results show that the Brain Mapping Hypothesis is not to be dismissed, yet there still remain assumptions in the model that do cause inexact predictions for some modules. We discuss how models of complex problem solvers can achieve a better fit to data by adaptations to their symbolic structure.
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From fMRI Data To Cognitive Models: Testing the ACT-R Brain Mapping Hypothesis with an Ex-Post Model. (deposited 05 Feb 2014 09:38)
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