화상 환자에서 신속 순차 시각 제시를 이용한 주의깜빡임에 관한 예비연구 (A preliminary study of Attentional Blink of Rapid Serial Visual Presentation in Burn patients with PTSD.)

서지정보

· 발행기관 : 대한생물정신의학회
· 수록지 정보 : 생물정신의학 / 17권 / 2호 / 79 ~ 84페이지
· 저자명 : 김대희, 전보라, 서정훈, 조용석, 임해준, 허준, 김도헌, 전욱, 김종현, 정명훈, 최인근, 이병철

초록

Objective Trauma patients have attentional bias which enforces traumatic memories and causes cognitive errors. Understanding of such selective attention may explain many aspects of the PTSD symptoms.
Methods We used the Rapid serial visual presentation (RSVP) method to verify attentional blink in burn patients with PTSD. The International affective picture system( IAPS) was used as stimuli and distracters. In the ‘neutral test’, patients have been presented with a series of pictures with human face picture as a target stimulus. Each picture had 100ms interval. However, the distance between target facial pictures was randomized and recognition of second facial picture accuracy was measured. In the ‘stress test’, the first target was a stress picture which arouses patient emotions instead of the facial picture. Neutral and Stress tests were done with seven PTSD patients and 20 controls. In the ‘85ms test’ the interval was reduced to 85ms. The accuracy of recognition of second target facial picture was rated in all three tests. Eighty-five ms study was done with eighteen PTSD patients.


Results Attentional blinks were observed in 100-400 ms of RSVP. PTSD patients showed increased recognition rate in the ‘stress test’ compared with the ‘neutral test’. When presentation interval was decreased to 85 ms, PTSD patient showed decrease of attentional blink effect when target facial picture interval was 170 ms .
Conclusion We found attentional blink effect could be affected by stress stimulus in burn patients. And attentional blink may be affected by stimulus interval and the character of stimulus. There may be some other specific mechanism related with selective attention in attentional blink especially with facial picture processing.

영어초록

Objective Trauma patients have attentional bias which enforces traumatic memories and causes cognitive errors. Understanding of such selective attention may explain many aspects of the PTSD symptoms.
Methods We used the Rapid serial visual presentation (RSVP) method to verify attentional blink in burn patients with PTSD. The International affective picture system( IAPS) was used as stimuli and distracters. In the ‘neutral test’, patients have been presented with a series of pictures with human face picture as a target stimulus. Each picture had 100ms interval. However, the distance between target facial pictures was randomized and recognition of second facial picture accuracy was measured. In the ‘stress test’, the first target was a stress picture which arouses patient emotions instead of the facial picture. Neutral and Stress tests were done with seven PTSD patients and 20 controls. In the ‘85ms test’ the interval was reduced to 85ms. The accuracy of recognition of second target facial picture was rated in all three tests. Eighty-five ms study was done with eighteen PTSD patients.


Results Attentional blinks were observed in 100-400 ms of RSVP. PTSD patients showed increased recognition rate in the ‘stress test’ compared with the ‘neutral test’. When presentation interval was decreased to 85 ms, PTSD patient showed decrease of attentional blink effect when target facial picture interval was 170 ms .
Conclusion We found attentional blink effect could be affected by stress stimulus in burn patients. And attentional blink may be affected by stimulus interval and the character of stimulus. There may be some other specific mechanism related with selective attention in attentional blink especially with facial picture processing.

참고자료

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