Abstract
This report focuses on a case of articulation disorder caused by left putarminal hemorrhage. The patient showed slight aphasia at the onset of stroke, which gradually improved except for a disorder of articulated language. We investigated the influence of the articulation disorder by means of phonetic analysis and undertook comparison with a case of pseudobulbar palsy where no aphasia was present. For phonetic analysis, speech duration in each speech modality (Kana read aloud for phonograms, Kanji read aloud for ideograms and picture naming) was determined spectrographically and the coefficient of variation was computed. Results indicated that the patient showed disturbance of the phonemic coding process according to the difference of speech modality, whereas the pseudobulbar palsy displayed no corresponding disturbance, we suggested that the patient shifted from a slight subcortical aphasia to a condition nearly allied to pure word dumbness.
