Light Therapy in Seasonal Affective Disorder Is Independent of Time of Day or Circadian Phase

Wirz‐Justice, Anna; Graw, Peter; Kräuchi, Kurt; Gisin, Beatrice; Jochum, Axel; Arendt, Joséphine; Fisch, Hans-Ulrich; Buddeberg, Claus; Pöldinger, W

doi:10.1001/archpsyc.1993.01820240013001

Cited by 175 publications

(66 citation statements)

References 36 publications

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“…There was no correlation of clinical improvement with initial depth of depression in our studies [ 18], where patients' depressions were of medium severity. There was no difference in response rate between patients on con stant antidepressant treatment or without (with the exception of lithium) [18 and unpubl.…”

Section: Swiss Light Therapy Studiescontrasting

confidence: 73%

Seasonal Affective Disorder: Are the DSM-III-R Criteria Valid ?

Dittmann

Elster²,

Graw³

et al. 1994

Psychopathology

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Retrospective analysis of the stringency of diagnosis and therapeutic response was carried out in 80 patients with major recurrent winter depression (SAD) who had participated in controlled light therapy trials in Switzerland from 1984 to 1990. Two groups were formed with respect to anamnestic information: patients whose previous episodes of seasonal depression had been reconstructed graphically, and those who could only globally recollect prior depressive phases. These data were taken to test conformity to DSM-III-R criteria for seasonal pattern, as well as its prognostic usefulness for response to light therapy. The more liberal ‘Rosenthal criteria’ for SAD of at least two consecutive, seasonally recurring major depressive episodes were sufficient to predict improvement with light: none of the other DSM-III-R criteria differentiated further, and few patients could remember previous depressive episodes in precise detail. Our data support suggestions to revise the restrictive SAD diagnostic criteria for DSM-IV.

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Section: Swiss Light Therapy Studiescontrasting

confidence: 73%

Seasonal Affective Disorder: Are the DSM-III-R Criteria Valid ?

Dittmann

Elster²,

Graw³

et al. 1994

Psychopathology

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“…Concerning the timing of bright light administration, behavioral improvements have been obtained in demented patients with morning as well as evening exposure, and a recent study showed equal effectiveness of morning and evening exposure in seasonal affective disorder as well (Wirz-Justice et al 1993). As far as we know, the present study is the first to apply a whole-day increase in light intensity in patients with disturbed circadian rhythms.…”

Section: Discussionmentioning

confidence: 65%

Indirect bright light improves circadian rest-activity rhythm disturbances in demented patients

Someren

Kessler

Mirmiran

et al. 1997

Biological Psychiatry

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“…Although some authors have concluded that the timing of light therapy is not crucial (Wirz-Justice et al, 1993;Meesters et al, 1995), most studies show a slight superiority of morning light over evening light (e.g. Lewy et al, 1998;Terman et al, 2001).…”

Section: Discussionmentioning

confidence: 99%

Mood regulation in seasonal affective disorder patients and healthy controls studied in forced desynchrony

Koorengevel

Beersma

Boer

et al. 2003

Psychiatry Research

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Mood regulation in seasonal affective disorder patients and healthy controls studied in forced desynchrony Koorengevel, Kathelijne M.; Beersma, Domien G.M.; den Boer, Johan A. ; Hoofdakker, Rutger H. van den Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. AbstractIn healthy subjects, both the duration of wakefulness and the circadian pacemaker have been demonstrated to be involved in the regulation of mood. Some features of affective disorders suggest that these two factors also play a role in the dysregulation of mood. In particular, disturbances of the circadian pacemaker have been proposed to be a pathogenetic factor in Seasonal Affective Disorder, winter type (SAD). This report presents a test of this proposition. To this end seven SAD patients and matched controls were subjected to a 120-h forced desynchrony protocol, in which they were exposed to six 20-h days. This protocol enables us to discriminate the extent to which the course of mood is determined by the imposed 20-h sleep-wake cycle from the influence of the circadian pacemaker on that course. Patients participated during a depressive episode, after recovery upon light therapy and in summer. Controls were studied in winter and in summer. Between SAD patients and controls no significant differences were observed in the period length nor in the timing of the endogenous circadian temperature minimum. In both groups, sleep-wake cycle-and pacemaker-related components were observed in the variations of mood, which were not significantly different between conditions. ᮊ

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Light Therapy in Seasonal Affective Disorder Is Independent of Time of Day or Circadian Phase

Cited by 175 publications

References 36 publications

Seasonal Affective Disorder: Are the DSM-III-R Criteria Valid ?

Seasonal Affective Disorder: Are the DSM-III-R Criteria Valid ?

Indirect bright light improves circadian rest-activity rhythm disturbances in demented patients

Mood regulation in seasonal affective disorder patients and healthy controls studied in forced desynchrony

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