MRI Neurofeedback and Brain Circuits Related to Motivation in Healthy Participants

Inclusion Criteria:

* Age between 18 and 45 years
* Right-handed
* In good general health

Exclusion Criteria:

* Current or diagnosis within past six months of an DSM-V Axis I or Axis II disorder (self-reported)
* CES-D score of 20 or higher (indicating significant current depression symptoms)
* Current or past six month use of prescription medications indicated for psychiatric conditions (e.g.,depression, anxiety)
* Current serious medical illness (self-reported)
* Head injury resulting in loss of consciousness
* For participants age \> 59 years, a total scaled score \< 8 on the Dementia Rating Scale-2.
* A clinically-defined neurological disorder including, but not limited to:
* Any condition likely to be associated with increased intracranial pressure
* Space occupying brain lesion
* History of stroke
* Transient ischemic attack within two years
* Cerebral aneurysm
* Dementia
* Mini Mental Status Exam (MMSE) score of \<24
* Parkinson's disease
* Huntington's disease
* Multiple sclerosis
* Presence of cochlear implants or other implanted electronic devices or non-removable metal (e.g., non-removable piercing, IUD)
* History of an eye injury involving metal. Participants who worked with metal may be allowed to participate on a case-by-case basis with prior written approval from BIAC.
* Claustrophobia or unwillingness to tolerate the confinement associated with being in the MRI scanner.
* Weight of more than 250 pounds