Studying the Effects of Digital Interventions on Cognition, Wellbeing, Stress, and Sleep in Older Adults

* comfortably ambulatory healthy physical condition * normal or corrected to normal visual * auditory acuity * fluency in spoken English * Between 60-85 years old * No neurological or psychiatric disorders * No substance abuse * Not taking anti-depressants * Not taking anti-anxiety medication * No history of seizures * No color blindness * No glaucoma * No macular degeneration * No amblyopia (lazy eye) * No strabismus (cross eyed) * Aneurysm clip(s) * No Cardiac pacemaker * No Implanted cardioverter defibrillator (ICD) * No Electronic implant or device * No Magnetically-activated implant or device * No Neurostimulation system * No Spinal cord stimulator * No Internal electrodes or wires * No Bone growth/bone fusion stimulator * No Cochlear, otologic, or other ear implant * No Insulin or other infusion pump * No Implanted drug infusion device * No type of prosthesis (eye, penile, etc.) * No Heart valve prosthesis * No Eyelid spring or wire * No Artificial or prosthetic limb * No Metallic stent, filter, or coil * No Shunt (spinal or intraventricular) * No Vascular access port and/or catheter * No Radiation seeds or implants * No Swan-Ganz or thermodilution catheter * No Medication patch (Nicotine, Nitroglycerine) * No metallic fragment or metallic foreign body in/on the body that can not be removed * No Wire mesh implant * No Tissue expander (e.g., breast) * No Surgical staples, clips, or metallic sutures * No Joint replacement (hip, knee, etc.) * No Bone/joint pin, screw, nail, wire, plate, etc. * No IUD, diaphragm, or pessary * No Dentures or partial plates that can not be removed * No Tattoo or permanent makeup * No Body piercing jewelry * No Claustrophobia