Progressive transformation of phoneme production in a sensory aphasic patient in repeated naming task

Abstract

    It is reported that a patient with sensory aphasia who had difficulty in repeating a word correctly. The patient read aloud words correctly, but the uttered ponemes were transformed progressively, then those phoneme reached to nonsense neologisms even when he was presented with a picture of the words simultaneously.
    We investigated the time and the number of word repetition before the transformation began. The noun and verb words which varying from 2 to 6 moras were used in the experiment.
    The results showed that the number of mora had a strong effect on the transformation, but grammatical class of the words did not. It is explained that the mechanism of the symptom was based on insufficient function of the phonological processor and disorders of information feedback between each cognitive module in speech processor.