Search

Purpose: The purpose of this study was to compare word reading performance according to word condition between cognitively normal elderly and elderly with mild cognitive impairment. Methods: We studied 21 patients with mild cognitive impairment (MCI) and 21 age-, sex-, and education-matched cognitively normal older adults. Participants were asked to administer a reading aloud task under four different word conditions (regular words, regular nonwords, irregular words, irregular nonwords). Results: First, the MCI group scored significantly lower compared to the normal elderly group in irregular both words and nonwords. Although there were no significant group differences in regular words and regular nonwords, both groups showed poor performance in the order of irregular nonwords, irregular words, regular nonwords, and regular words. Second, from the error analyses, the MCI group made more ‘regularization’ errors than the normal elderly group in both irregular words and irregular nonwords. Also, in regular nonwords, the MCI group made more ‘phonological errors’ than the elderly group. Conclusion: Our findings suggest that MCI adversely affects lexical routes for reading irregular words. Also, decreased performance in irregular nonwords requiring both reading routes represents the the lexical route is impaired and the phonologicl route is not fully preserved in MCI.

배경 및 목적: 좌반구 손상이 있더라도 언어 관련 영역이 침범되지 않으면 실어증이 동반되지 않을 수 있고, 뇌손상으로 인한 인지능력의 변화로 실어증이 없는 상태에서도 실독증과 실서증이 발생할 가능성이 있다. 본 연구에서는 좌반구 뇌경색 환자를 대상으로 실어증 유무에 따른 읽기와 쓰기 수행력 및 오류 양상을 살펴보았다. 방법: 좌반구 뇌경색 환자...