This research study evaluates the effects of anFDA-approved medication Gabapentin in individuals with Bipolar Disorder who smoke marijuana. Participants in the study will will be assigned to take either Gabapentin or a matched placebo. Study medication will be taken for 17 days. There will be 5 study visits, with 2 MRI brain imaging scans completed. Questionnaires and clinical interview measures will be completed at study visits along with consistent assessment of potential side effects from study medication.

Patients with cardiovascular disease (CVD) are at increased risk of depression following hospital discharge. Unfortunately, most depressed CVD patients do not receive appropriate care for their depression, often because they are unable to, or are fearful of traveling to providers for the regimen of 8-12 weekly visits of therapy such as Behavioral Activation (BA). This study will compare the effectiveness of BA for depression, delivered via Telehealth, to standard post-CVD hospital discharge best practices. It is predicted that patients who receive BA will have better mental health outcomes and will be less likely to be re-hospitalized compared to patients who receive standard post-discharge care.

The purpose(s) of the research is to test a new medication in combination with a talk therapy for Veterans experiencing posttraumatic stress disorder (PTSD) and who may have alcohol use disorder (AUD). The study consists of 12 weekly therapy sessions. Once per week before each therapy session, an intranasal dose of investigational medication will be administered. The study also involves 3 and 6-month follow-up appointments and the administration of questionnaires at each visit.

Depression is a very common disorder that is most often chronic or recurrent in nature. Many subjects do not respond adequately to an initial antidepressant treatment trial. Subjects who do not respond adequately to multiple therapeutic interventions are considered to have treatment-resistant depression (TRD). Among the treatment options for subjects with TRD is Vagus Nerve Stimulation (VNS) Therapy.This blinded, randomized, multicenter controlled study is intended to collect evidence that VNS Therapy as an adjunctive therapy improves health outcomes for patients with TRD.

The purpose of this study is to determine whether a new medical technology can help reduce post-operative total knee or hip pain when combined with a Cognitive-Behavioral intervention (CBI).

This new medical technology, is called transcranial direct current stimulation (tDCS), it uses a very small amount of electricity to temporarily stimulate specific areas of the brain thought to be involved in pain reduction. The electrical current passes through the skin, scalp, hair, and skull and requires no additional medication, sedation, or needles.

This study will investigate the effects of tDCS, the Cognitive-Behavioral (CB) intervention and their combination on pain among veterans following total knee arthroplasty (TKA) or total hip arthroplasty (THA). You may benefit in the form of decreased pain and opioid requirements following your knee or hip replacement surgery. However, benefit is only likely if you are randomized to one of the 3 (out of 4) groups.

This study hopes to determine the effects of these interventions and their combined effect on post-operative pain, opioid use and functioning during the 48-hour post-operative period following a total knee or hip replacement.

Aerobic exercise training has positive effects on depression severity and mood in individuals with depression. The effects of single sessions of aerobic exercise may also provide some short-term benefits in depression. It is believed that a reduction in depression severity may be facilitated by changes in the nervous system, however this has yet to be examined. Although aerobic exercise has beneficial effects for those with depression it is unclear as to why this may occur. Therefore the goal of our project is to better understand the effect of a single session of aerobic exercise on the nervous system, physiology, and mood in depression.