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1. 35–85 years of age
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1. Dementia as defined by DSM-IV criteria
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2. Diagnosis of PD by a Movement Disorders neurologist
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2. Patients with suboptimally treated depression and significant depressive symptoms as defined by a PHQ-9 score of > 15. Antidepressant medications prescribed for depression or anxiety were allowed if the patient had been on a stable dose for at least 1 month.
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3. On stable antiparkinsonian medications for the past 30 days
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3. Significant hallucinations or psychotic symptoms requiring antipsychotic medications
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4. ISI > 11
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4. Presence of significant sleep disorders that could be contributing to insomnia such as known sleep apnea, RBD, RLS
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5. Access to a computer and internet
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5. Presence of significant motor fluctuations, especially nocturnal akinesias that could be contributing to insomnia
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6. Be able to speak, read and understand English
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6. Use of sedatives, benzodiazepines or sedating antidepressants (such as mirtazapine, TCAs), modafinil, stimulants, anticholinergic medications, were allowed if the patient had been on a stable dose for at least 1 month and was not taking it as a sleep aid.
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7. Significant renal, hepatic, cardiac and thyroid disease that could have interfered with protocol adherence
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