시각적 유사성과 음운적 유사성이 한글 단어 재인에 미치는 영향: 정상인과 명칭실어증 환자의 형태 정보처리 차이

초록

The purpose of the present research was to gain a better under standing of the processes involved in the lexical access for the orthographic stimulus in an anomic aphasic. Experiment 1 was designed to evaluate the priming effect along the pattern of the prime and the stimulus onset asynchrony (SOA). T he Experiment 1 revealed facilitatory form priming effect on the orthographically similar words in both the control subject and the anomic aphasic. Experiment 2 was performed to investigate whether the facilitatory form priming effect was cau sed by the orthographic or the phonological similarity between the prime and target words. Experiment 2 showed that the facilitatory form priming effect s showed no difference between the orthographic and the phonological similarities in the normal control group, but the facilitatory form priming effect s by the phonological prime was stronger than by the orthographic prime in the anomic aphasic. These finding s were quite supportive of the phonological proces sing for lexical acces s in the anomic aphasic. In Experiment 3, we attempted to evaluate whether the form priming effect was activated in the lexical access or in the pre- lexical stage. In the control subject , the inhibitory form priming effect was obtained. But the facilitatory form priming effect was shown in the anomic aphasic. Experiment 3 revealed that the anomic aphasic did not effectively inhibit the activated priming words in the lexical access. T he result s of Experiment s 1, 2, 3 suggest that the anomic aphasic recognize Hangul words via the phonological recoding route in the pre- lexical processing and the anomic aphasic has a problem in inhibiting the competing lexical candidates in the mental lexicon.