Anxiety
Conditions
Brief summary
The purpose of this study is to determine if transcranially administered bright light has acute effect on anxiety symptoms.
Detailed description
Subjects (n=30) with anxiety symptoms will be recruited into the study. To be included into the study, subjects have to get at least seven points in BAI(Becks Anxiety Inventory). At the beginning of the study subject will be randomly assigned to 12 minutes of acute transcranial bright light or placebo exposure group. Anxiety symptoms will be measured using Spielberger State-Trait Anxiety Inventory (STAI, form Y1)self-rating questionnaire just before and 10 and 110 minutes after the experiment.
Interventions
DEVICETranscranial bright light device
DEVICETranscranial sham device
Sponsors
Valkee Oy
University of Oulu
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No
Inclusion criteria
* Subject can read and understand the study protocol * The written informed consent is obtained from subject * Subject's BAI total score \>= 7
Exclusion criteria
* Subject has a lifetime psychotic disorder * Subject abuses substance or has a dependence * Subject has had suicidal idealization during the past month * Subject use psychotropic medications * Subject has unstable somatic disease * Subject has used bright-light therapy for the current episode * Subject is pregnant * Subject is a relative of a member of research team * Subject has used transcranial light treatment
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in total score of STAI-Y1 | just before exposure, 10 minutes and 110 minutes after the exposure | STAI-Y1 (Spielberger State-Trait Anxiety Inventory, form Y1) |
Countries
Finland
Outcome results
None listed