Dawn simulation vs. bright light in seasonal affective disorder: Treatment effects and subjective preference

Danilenko, Konstantin V.; Ivanova, Iana A.

doi:10.1016/j.jad.2015.03.055

Cited by 21 publications

(11 citation statements)

References 11 publications

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“…All SAD women had participated in a previous light therapy study [20]. The treatment session which was allocated first (bright or red light) was counterbalanced within each study group.…”

Section: Resultsmentioning

confidence: 99%

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Investigation of an Immediate Effect of Bright Light on Oxygen Consumption, Heart Rate, Cortisol, and α-Amylase in Seasonal Affective Disorder Subjects and Healthy Controls

Ivanova

Danilenko²,

Aftanas³

2016

Neuropsychobiology

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Background: Body (fat) mass has been shown to decrease following bright light treatment for overweight women, irrespective of their seasonal (light) dependence. It is not known if this is due to an (immediate) increase of metabolism. Methods: Ten women with seasonal affective disorder (SAD) and 10 non-SAD women matched by age, body mass index, and menopausal status participated in a laboratory study in the morning, twice within 1-5 days. During one session, bright light (4,300 lx) was presented for 30 min, and during the other session, red light (250 lx “placebo”) was used. After an initial 15 min of sitting quietly in an experimental chamber, 10-min measurements were done before, at the end, and 15 min after light exposure; the subjects remained seated for 80 min in total. The measurements included 5-min oxyspirography (oxygen consumption, carbon dioxide emission, and heart rate), saliva sampling for the estimation of cortisol and α-amylase concentrations, and self-rating of mood, energy, and sleepiness. Results: There was no light-specific effect on the measured variables, except that sleepiness was reduced more with bright light than with red light in the combined group. α-Amylase values were lower in the SAD patients than in the non-SAD controls. Conclusions: Morning artificial bright light, in comparison with dim red light, had no immediate effect on metabolism and resting sympathetic tone, though subjective sleepiness decreased more with bright light. SAD patients have low salivary α-amylase levels, indicating lower sympathetic tone.

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“…All SAD women had participated in a previous light therapy study [20]. The treatment session which was allocated first (bright or red light) was counterbalanced within each study group.…”

Section: Resultsmentioning

confidence: 99%

“…Both devices had similar light-spectrum characteristics and had been used earlier in an SAD treatment study [20]. Red light was presented from the Sunray2-Max light box with 1 of the 3 fluorescent tubes removed and dimmed by a red film filter (250 lx at a 41-cm distance).…”

Section: Methodsmentioning

confidence: 99%

Investigation of an Immediate Effect of Bright Light on Oxygen Consumption, Heart Rate, Cortisol, and α-Amylase in Seasonal Affective Disorder Subjects and Healthy Controls

Ivanova

Danilenko²,

Aftanas³

2016

Neuropsychobiology

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“…In the wintertime, a gradual increase of morning light is simulated just prior to wake-up time (mostly from 0 to 300 lux in 30 minutes). Positive results have been reported 93,94. An advantage of dawn simulation is that it is less time-consuming than more traditional LT. People receive the light when they are still sleeping until they wake up.…”

Section: Light Treatmentmentioning

confidence: 93%

Seasonal affective disorder, winter type: current insights and treatment options

Meesters¹,

Gordijn²

2016

PRBM

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Seasonal affective disorder (SAD), winter type, is a seasonal pattern of recurrent major depressive episodes most commonly occurring in autumn or winter and remitting in spring/summer. The syndrome has been well-known for more than three decades, with light treatment being the treatment of first choice. In this paper, an overview is presented of the present insights in SAD. Description of the syndrome, etiology, and treatment options are mentioned. Apart from light treatment, medication and psychotherapy are other treatment options. The predictable, repetitive nature of the syndrome makes it possible to discuss preventive treatment options. Furthermore, critical views on the concept of SAD as a distinct diagnosis are discussed.

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“…If we only consider the studies of high and moderate quality or studies that actively searched for ocular complaints, we get a similar impression of the estimate of the emergence of ocular complaints . The complaints are usually mild, and discontinuation of treatment due to ocular complaints seems to be exceptional (Box Table ). Figure shows a bar graph indicating the percentage of participants experiencing ocular discomfort or problems with vision in response to light therapy per study per condition (active and placebo condition).…”

Section: Resultsmentioning

confidence: 99%

Light therapy: is it safe for the eyes?

Brouwer

Nguyen

Snoek

et al. 2017

Acta Psychiatr Scand

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Dawn simulation vs. bright light in seasonal affective disorder: Treatment effects and subjective preference

Cited by 21 publications

References 11 publications

Investigation of an Immediate Effect of Bright Light on Oxygen Consumption, Heart Rate, Cortisol, and α-Amylase in Seasonal Affective Disorder Subjects and Healthy Controls

Investigation of an Immediate Effect of Bright Light on Oxygen Consumption, Heart Rate, Cortisol, and α-Amylase in Seasonal Affective Disorder Subjects and Healthy Controls

Seasonal affective disorder, winter type: current insights and treatment options

Light therapy: is it safe for the eyes?

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