CAJ | 학술논문

目的通过对自行研制的数码管式闪光临界融合频率测试仪(digit critical fuse frequency apparatus,DCFFA)的测试结果进行分析,从而验证该仪器的适用性,为飞行疲劳的评价提供一种更客观、准确、可靠的方法.方法本校21名男性学员自愿参加试验,用INCFF随机呈现数字"0"～"9",其闪烁频率随机为25～49 Hz内的奇数频率值,分别测量受试者的反应时间(reaction time,RT)和按键正确率,并根据正确率将受试者的测试频率值分为低于闪光临界融合频率(critical fuse frequency,CFF)组(正确率高于60%)、CFF组(正确率40%～60%)和高于CFF组(正确率低于40%),然后对3组的RT和正确率进行描述性统计分析、方差齐性检验和配对t检验.结果用于受试者测试的频率值低于CFF值时,RT为(3.56±1.92)s;频率值接近于CFF时,RT为(4.23±2.11)s;频率值大于CFF时,RT为(2.99±1.91)s.频率值接近于CFF时的RT明显大于频率值高于CFF值时的RT,且差异有统计学意义(P＜0.01).结论 DCFFA能够较客观地测量出受试者的CFF,其结果准确可靠.
목적 통과대자행연제적수마관식섬광림계융합빈솔측시의(digit critical fuse frequency apparatus,DCFFA)적측시결과진행분석,종이험증해의기적괄용성,위비행피로적평개제공일충경객관、준학、가고적방법.방법 본교21명남성학원자원삼가시험,용INCFF수궤정현수자"0"～"9",기섬삭빈솔수궤위25～49 Hz내적기수빈솔치,분별측량수시자적반응시간(reaction time,RT)화안건정학솔,병근거정학솔장수시자적측시빈솔치분위저우섬광림계융합빈솔(critical fuse frequency,CFF)조(정학솔고우60%)、CFF조(정학솔40%～60%)화고우CFF조(정학솔저우40%),연후대3조적RT화정학솔진행묘술성통계분석、방차제성검험화배대t검험.결과 용우수시자측시적빈솔치저우CFF치시,RT위(3.56±1.92)s;빈솔치접근우CFF시,RT위(4.23±2.11)s;빈솔치대우CFF시,RT위(2.99±1.91)s.빈솔치접근우CFF시적RT명현대우빈솔치고우CFF치시적RT,차차이유통계학의의(P＜0.01).결론 DCFFA능구교객관지측량출수시자적CFF,기결과준학가고.
Objective To validate the feasibility of the self developed digit critical fuse frequency apparatus (DCFFA) and suggest more objective, accurate and reliable measurement in fatigue evaluation. Methods Twenty-one male students were selected as subjects for the test where a 7-seg digit ("0" to "9") was randomly generated by DCFFA with odd frequency from 25-49 Hz. Subjects responded the digit by key pressing and the reaction time (RT) and accuracy of responding were recorded. Subject's critical fuse frequency (CFF) values were partitioned by accuracy (range from ＞60%, 40%-60% and ＜40%) as high CFF, CFF and low CFF group respectively. RT and accuracy were then analyzed by descriptive statistics, equality of variances and paired-sample t test. Results When the applied frequency was respectively lower or higher than CFF, the recorded RT was (3.56±1.92) sor (2.99±1.91) s. And when it was set around CFF, the RT [(4.23±2.11) s] was significantly higher than that in the frequency above CFF (P＜0.01). Conclusions The validation proved that DCFFA could objectively detect CFF with accurate and reliable measurement.