• Aged 18-65 years old
• Have a diagnosis of Major Depressive Disorder (MDD)
• Currently depressed
• Poor response to antidepressant treatment

-Diagnosis of Peripheral Arterial Disease (PAD) OR leg symptoms, such as muscle pain or cramping AND/OR foot wound that has required medical consultation Healthy volunteers - must be at least 40 years of age - no history of cardiovascular disease (including high blood pressure) - no history of diabetes mellitus - non-smoker - normal BMI

Inclusion Criteria:
1. Age 18–and older at the time of enrollment
2. Individuals who are experiencing lower extremity pain e.g. neuropathy, Complex Regional Pain Syndromes (CRPS) type-1, neuropathic leg pain following Failed Back Surgery (FBS) etc.
3. Those who have an implanted epidural Spinal Cord Stimulator (SCS)
4. The SCS implantation for at least three months prior to enrollment

- You are a medically healthy man or woman
- You are between the ages of 21 and 55 years of age
- Do not abuse alcohol or other drugs
- With a current history of “anger issues”
- Able to complete study sessions during the week

- You are at least 45 years old
- Clinical diagnosis of ischemic stroke* of unknown cause (ESUS or cryptogenic) in the last 120 days
- Underwent an echocardiogram as part of your stroke work up
- No history of atrial fibrillation (irregular heartbeat)
- No known allergy or intolerance to aspirin or apixaban

*An “ischemic” stroke is an injury to the brain caused by a blocked blood vessel supplying the brain.

- Medically healthy man or woman - You are between 21 and 55 years of age - With a current history of “anger issues” - You have regular access to a computer and a smart phone

You may be eligible for this study if you:
1. Are scheduled for vaginal birth.
2. Are pregnant with a single fetus.
3. Haven't given birth previously, or had a previous pregnancy terminated within 24 weeks gestation.
4. Are willing to comply with the protocol required follow-up visits.
5. Are able and willing to provide written informed consent prior to enrollment.
6. Are 18 years of age or older at time of consent.

You will be ineligible for this study if you:
1. Have a high likelihood of less than 1 hour of potential device dilation time after you arrive at the hospital.
2. Have a need for or is planning a Caesarean-section.
3. Begin labor with less than 36 weeks gestation.
4. Have a neurological disorder that could cause pelvic floor dysfunction, such as multiple sclerosis or spinal cord injury
5. Have a collagen-associated disorder that affects tissue elasticity, such as scleroderma or Ehlers-Danlos syndrome
6. Have a localized (genital tract) or systemic infection.
7. Have had prior surgical procedures to the vaginal anatomy which could lead to pelvic floor dysfunction, such as pelvic fractures or pelvic soft tissue injuries
8. Have any general health condition or systemic disease that may represent, in the opinion of the investigator, a potential increased risk associated with device use or pregnancy.
9. Have placenta previa or vasa previa.
10. Have a known significant chromosomal or structural fetal anomalies.
11. Have a category 2 and/or 3 fetal tracing that is unresolved.

- You are a teen or young adult - Have access to smart device or computer with internet to be able to complete surveys

- Parents and children must be able to read and understand English fluently
- Child is 6 to 9 years of age
- Meet other criteria (e.g., no traumatic brain injury) for the study

You may be eligible if you:
- Are 21- 40 years old
- Are a smoker

Patients at the Ohio State University Rheumatology and Lupus Clinic with one of the following diagnoses who are ages 18 years of age and older:
- Systemic lupus erythematosus
- Discoid lupus
- Mixed connective tissue disorder
- Undifferentiated connective tissue disorder
- Wegener’s granulomatosus
- Microscopic polyangiitis
- Henoch-Schonlien Purpura
- Takayasu’s arteritis
- Giant cell/temporal arteritis
- Churg-Strauss vasculitis
- Other vasculitides
- IgA nephropathy
- Anti-GBM GN
- Membranous GN
- Minimal Change Disease
- Focal Segmental Glomerulosclerosis

- Age 18 or older
- Diagnosed with Stage 2 or 3 NASH (nonalcoholic steatohepatitis--meaning your liver is swollen and damaged because of a buildup of fat in your liver) and some liver fibrosis (which is damaged and scarred liver tissue).

If you are eligible and decide to take part in this research study, you will need to complete 1 or 2 screening visits to see if you are eligible to participate in the study. Once the study doctor determines you can participate in the study, you will be asked to come back to the clinic 8 times (for the Month 0 [Day 1] Visit, the Month 1 Visit, the Month 3 Visit, and then every 3 months) for the first 18 months you are in the study and then 2 times per year (every 6 months) for each additional year you are in the study.