Inclusion Criteria:  right-handed between 21-50 years of age no current diagnosis of psychiatric or neurological conditions no history of heart disease or stroke generally healthy pass a screening test for the MR environment  Exclusion Criteria:  contraindications to the MR environment use of psychotropic or neurological medication history of heart disease or stroke diabetes or other metabolic conditions self-reported high blood pressure history of concussions any diagnosed psychiatric or neurological condition have consumed alcohol in the 24-hour period prior to a scan consumed pain relievers in the 12-hours prior to a scan consumed food or drinks (except water) and/or nicotine/caffeine an hour prior to any scanning have used or take THC/CBD exercised within an hour of a scan