The Effect of Acute Transcranial Bright Light on Anxiety Symptoms

University of Oulu

Status: Completed

Conditions: Anxiety

Treatments: Device: Transcranial bright light device; Device: Transcranial sham device

Study type: Interventional

Funder types: Other; Industry

Identifiers

NCT01938937

ANX-a

Details and patient eligibility

About

The purpose of this study is to determine if transcranially administered bright light has acute effect on anxiety symptoms.

Full 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.

Enrollment: 60 estimated patients

Sex: All

Ages: 18 to 65 years old

Volunteers: No Healthy Volunteers

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

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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60 participants in 2 patient groups

Transcranial bright light exposure

Experimental group

Description:

Transcranially administered bright light exposure for 12 minutes

Treatment:

Device: Transcranial bright light device

Transcranial sham exposure

Sham Comparator group

Description:

Transcranially administered sham exposure for 12 minutes

Treatment:

Device: Transcranial sham device