BLAIR ARMSTRONG, University of Toronto
Title: The Temporal Dynamics of Ambiguous Word Comprehension
Ebbinghaus Empire Series 2017-2018
Abstract: Understanding how ambiguous words are comprehended (e.g., / BANK) is a fundamental requirement for a theory of word and discourse comprehension, and is particularly challenging because of the discrepant ambiguity effects reported between - and sometimes within - tasks. I show how a more biologically plausible model explains a broad range of ambiguity effects based on how semantic activity unfolds over time. Targeted empirical studies support (to a degree) the novel predictions of the model, and falsify those of a popular alternative account based on the decision system. Extending this work, I report simulations of an important ERP correlate of simple context-sensitive word comprehension - N400 ERP repetition effects - thus providing an explicit mechanistic link between word comprehension, neuroimaging data, and the biologically-plausible computational architecture. Time permitting, I will also describe new related lines of research exploring the structure of ambiguous word meanings using computational models of word co-occurrence, as well as how we are attempting to create new "artificial" ambiguous words using a paradigm borrowed from statistical learning.
Watch video of Blair Armstong talk at https://play.library.utoronto.ca/hd4Y7YJU1s23
For further information please contact Amy Finn (firstname.lastname@example.org) or Michael Mack at email@example.com.
If you require an accommodation due to a disability, please contact the event coordinator OR email firstname.lastname@example.org five days prior to the event. We will work with you to make appropriate arrangements.