Retrospective and prospective memory depending on the type of cue in obstructive sleep apnea patients: Questionnaire study

Kim, Kwang Ki; Nam, Hyun Woo; Byun, Eunhee

doi:2009.6.2.93

J Korean Sleep Res Soc > Volume 6(2); 2009 > Article

ORIGINAL ARTICLE

J Korean Sleep Res Soc. 2009;6(2):93-96. doi: https://doi.org/10.13078/jksrs09018

수면 무호흡 환자에서의 단서에 따른 주관적인 과거 및 미래 기억 이상의 차이: 설문 연구

¹동국대학교 일산병원 신경과
²서울대학교 보라매병원 신경과

Retrospective and prospective memory depending on the type of cue in obstructive sleep apnea patients: Questionnaire study

Kwang Ki Kim¹, Hyun Woo Nam², Eunhee Byun¹

¹Department of Neurology, Dongguk University Ilsan Hospital, Ilsan, Korea
²Department of Neurology, Boramae Hospital, Seoul National University, Seoul, Korea

Corresponding Author: Kwang Ki Kim ,Tel: +82-31-961-7215, Fax: +82-31-961-7977, Email: neukim@duih.org

Received: December 11, 2009 Accepted: December 24, 2009 Published online: December 31, 2009

ABSTRACT

Background: Obstructive sleep apnea (OSA) is common and causes cognitive dysfunction including memory failure. This study examined the subjective failure frequencies of retrospective and prospective memory when there were two different cues (self- and environmental-cued) in patients with OSA using questionnaire. Method: Forty-three patients who underwent polysomnography and were diagnosed as OSA were included. The OSA patients were categorized into 3 groups based on the scores of the apnea-hypopnea index (AHI). All patients answered the questionnaire of 16 questions. The questions were divided into four categories as a result of the combination of memory type (prospective and retrospective memory) and cueing (self-cue vs. environmentally-cued).
Results: All patient groups showed subjective memory failure in both retrospective and prospective memory. The subjective memory failure frequency of the self-cued condition was higher than the environmentally-cued condition when patients in the retrospective memory condition. On the other hand, there was no significant difference in the prospective memory condition.
Conclusion: OSA patients have dysfunction in both retrospective and prospective memory. The pattern of dysfunction is different depending on the kind of cue.

Keywords: Obstructive sleep apnea | Prospective memory | Retrospective memory | Questionnaire