0000000000724724
AUTHOR
Marius Keller
Actigraphic and Self-reported Sleep in Traffic Accident Victims
Background: Some accident victims report poorer sleep during the months after the trauma, which may double the risk for and is a mediator of the development of a PTSD. Furthermore, subjective and objective sleep measures are often discrepant in PTSD-patients, which is why a ‘sleep state misperception’ of PTSD patients is often hypothesized. Objective: The goal of this study is to assess differences in sleep quality in victims of a traffic accident compared to healthy participants without an accident history as well as differences between objective and subjective sleep quality measures. Methods: We recruited 25 hospitalized accident victims within ten days of an accident and 31 age and sex-m…
Supplementing sleep actigraphy with button pressing while awake
Objective/backgroundWrist-worn sleep actigraphs are limited for evaluating sleep, especially in sleepers who lie awake in bed without moving for extended periods. Sleep logs depend on the accuracy of perceiving and remembering times of being awake. Here we evaluated pressing an event-marker button while lying awake under two conditions: self-initiated pressing every 5 to 10 minutes or pressing when signaled every 5 minutes by a vibration pulse from a wristband. We evaluated the two conditions for acceptability and their concordance with actigraphically scored sleep.Participants and methodsTwenty-nine adults wore actigraphs on six nights. On nights 1 and 4, they pressed the marker to a vibra…