Table 1 Main study exclusion and inclusion criteria

• Hearing problems or use of a hearing aid

• Color blindness

• Motor control problems

• Psychotropic medication

• Current depression or anxiety, or occurrence of depression/anxiety within 5 years

• Concussion with unconsciousness for 5 min or more

• Pregnancy or attempting to become pregnant

• More than 4 alcoholic drinks per week for women, more than 6 for men

• History of drug or alcohol abuse or addiction

• Weight greater than 250 pounds

• MRI incompatibility (claustrophobic, foreign metallic objects, pacemaker, etc.)

• Age 18–29 years or 65 years and older

• Right-handed

• Native English speaker

• Healthy (i.e., no debilitating conditions, mental illness, or head trauma)