Phonological processing and the role of strategy in silent reading: behavioral and electrophysiological evidence.

To examine the contribution of phonological processing in silent reading, 51 native English speakers made decisions about targets presented either in word pairs or in sentences. The target words were homophonically (plain-plane), orthographically (plane-place), or semantically (plane-jet) related. N200 was enhanced only to homophonic targets, suggesting the use of phonological information in silent reading. Memory load did not affect the N200 amplitude. N400 was enhanced to all semantically incongruent words and was larger in the word pair condition. Reaction times were influenced by both experimental condition and target relationships; homophonic stimuli elicited the fastest RTs in the word pair condition and the slowest RTs in the sentence condition, suggesting the use of different strategies. Thus, ERP components and behavioral responses registered different aspects of language processing.