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Updated: Apr 15, 2026
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Presynaptically Silent Synapses Studied with Light Microscopy
Published on: January 4, 2010
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The psychiatry of light
Richard S Schwartz1, Jacqueline Olds
1From Harvard Medical School; McLean Hospital, Belmont, MA (Dr. Schwartz); Department of Psychiatry, Massachusetts General Hospital, Boston, MA (Dr. Olds).
Harvard Review of Psychiatry
|April 4, 2015
Summary
Bright light therapy and chronotherapy are effective treatments for depression and sleep disorders, with potential benefits for ADHD, delirium, and dementia. This overview covers their biology, applications, and practical use.
Area of Science:
- Chronobiology
- Neuroscience
- Psychiatry
Background:
- Bright light therapy and chronotherapy are empirically supported but underutilized treatments.
- Their applications extend beyond seasonal affective disorder.
Purpose of the Study:
- To provide a practical overview of bright light therapy and chronotherapy.
- To discuss their underlying biology, indications, treatment parameters, and adverse effects.
Main Methods:
- Literature review of existing research on light therapy and chronotherapy.
- Synthesis of information on biological mechanisms and clinical applications.
Main Results:
- Efficacy demonstrated for nonseasonal depression and sleep disorders.
- Emerging evidence supports use in attention-deficit/hyperactivity disorder, delirium, and dementia.
Conclusions:
- Bright light therapy and chronotherapy offer valuable therapeutic options.
- Further integration into clinical practice is warranted, considering biological and societal factors.
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