Brief Papers

orthographic and phonological encoding of visual words were contrasted in a patient with letter-by-letter reading using a priming paradigm. Lower case primes displayed for 100 msec preceded upper case target words the subject had to name. Primes were the same word as the target, homophones to the target, or unrelated words. Relative to unrelated primes, same-word primes resulted in a significant reduction of naming times. In contrast, homphone primes had no effect. The results suggest that a crucial constraint on reading performance in letter-byletter reading is phonological access, not orthographic processing.

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