None listed
Conditions
Interventions
Staying at dim light environment (<
150lux) for 3 days
Sponsors
National Center of Neurology and Psychiatry
Eligibility
Sex/Gender
Male
Inclusion criteria
Inclusion criteria: Male with eligible age (>=20, <=49 years old)
Exclusion criteria
Exclusion criteria: Affected with sleep, physical, or psychiatric disorders Using drugs which may affect sleep Affected with disease of the rectum Worked night shifts or traveled across time zones in the previous 6 months Difficulty for staying laboratory
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The magnitude of Internal desynchrony will be calculated by the discrepancy of the circadian phases between on first experimental day and second experimental day during a stay in the temporal isolation laboratory under dim light environments. | — |
Secondary
| Measure | Time frame |
|---|---|
| The level of a stress response, mood, alertness, and psychomotor performance will be calculated by cortisol awakening response and salivary stress hormone, questionnaire, electroencephalography, and test battery on the second and third day, respectively, and compared to those on the first day. The correlation analyses with the magnitude of internal desynchrony will also be performed. Participants will be stratified by eligible vulnerable factors (light sensitivity and circadian preferences), and group differences of the magnitude of internal desynchrony will be evaluated. | — |
Countries
Japan
Contacts
Public ContactShingo Kitamura
National Center of Neurology and Psychiatry National Institute of Mental Health, Department of psychophysiology
Outcome results
None listed