But brain fog and hypervigilance, two symptoms of TBI, stayed with him and were exacerbated by a car accident last year. In the maloca prior to the first ceremony, the fighters sit in a circle and talk about what brought them here. The fighters meet with the research team for 45-minute health interviews and pre-dosing EEG scans intended to establish baseline measures of brain activity. Foshee, who is wearing an EEG cap, asks Irwin whether he is on a camping trip and stares back blankly when he is told he’s in an ayahuasca ceremony. EDINSON IVAN ARROYO MORA Everyone in front of the maloca after a week at the ayahuasca retreat at LaWayra.