Decoding and Modulating Affective Brain States

Inclusion criteria:

1. 18-65 years old
2. Patient Health Questionnaire (PHQ-9 score) = or \> than 10
3. Comprehension of instructions in the English language.
4. Capacity to provide informed consent and follow study procedures.
5. Availability for the duration of the study.

Exclusion Criteria:

1. Diagnosis of bipolar disorder (as PI discretion), schizophrenia or other psychotic disorder
2. Recent use of psychoactive medications or substances as determined by investigators
3. History of neurological disorder or traumatic brain injury (other than mild)
4. Unable to have an MRI scan, or current or prior medical condition that could interfere with the collection or interpretation of MRI data
5. Unable to receive or tolerate TMS
6. Implanted devices, such as an aneurysm clip or cardiac pacemaker
7. History of stroke, epilepsy, or brain scarring
8. Pregnant, nursing, or trying to become pregnant (self-attestation alone)

During this study, participants are asked to:

1. Refrain from substance use (including marijuana and illicit drugs) for duration of the study (self-attestation alone).
2. Abstain from alcohol for 24 hours before the MRI scans (self-attestation alone).
3. Abstain from increasing caffeine intake or begin taking any new medications (self-attestation alone).