A Potential Measure of Phonological Processing During Natural Speech Comprehension

There is a long history of using ERPs to index semantic and syntactic processing of speech and text. However, we are lacking a measure of phonological processing that can be used with typical language stimuli. We have discovered a potential new ERP effect - a centrally distributed positivity around 100 ms after onset of the incorrect allomorphs on past tense verbs (e.g., walk/d/ and boo/t/) and plural nouns (e.g., back/z/ and shoe/s/). I'll discuss our current data and plans for future experiments. We would appreciate your input on both!