Dr. Alec Marantz
Support for dual route models of word recognition comes from a specific interpretation of surface frequency effects on reaction times in behavioral experiments. However, MEG data have shown that behavioral RT masks the interaction of processing effects at different temporal stages in word recognition. MEG data will be presented supporting Taft’s contention that surface frequency effects for morphologically complex words reflect a recombination stage of a model in which decomposition is obligatory, contra any dual route model. Can we employ what we’ve learned from this and related MEG experiments to ask about the status of pieces of words like the able in stable? This piece is predictive of the dispositional adjective status of stable as well as the form of nominalized stability (able potentiatesity in English). We’ll present some preliminary results from an experiment designed to address these issues as well as proposals by Hay and others concerning the possible determinants of “whole word” processing. These results illustrate an approach to MEG analysis that involves correlating brain activity in regions of interest with continuous stimulus variables, where the brain activity derives from a distributed source model constrained by structural MRIs of each subject. Contributors: Olla Solomyak, Ehren Reilly, Bill Badecker, Asaf Bachrach, Susan Gabrieli, John Gabrieli. Visit our website: http://www.cogsci.jhu.edu (menu header: Events)
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