realman says can be explained by known medical conditions but not all of them. the state department sent many of those unexplained cases to the university of pennsylvania where dr. douglas smith lead doctor for brain study and repair. >> i sent a team to to look at these patients. a lot of the neurological symptoms that were examined were impressing our team members. then sometime i think in october each one of the team members just said what they thought from their own specialty perspective. and 100% really felt there was something there. >> so they were skeptical going into it but every single one of them felt there was something there? >> absolutely. my opinion, and i think all the team members opinions are that there is something there. >> dr. smith and his team put the patients through extensive testing, including auditory, and ocular evaluations. >> turns out that ocular motor function was one of the most notable issues of these patients. so these are measurements they're not like 100% but it's pretty clear to the practitioners that this is well out of the