Can smoking Weed 8 hours before a EEG test affect the results? I had a seizure 3 months ago and have not been able to drive because of it. This EEG is

EEG. Medications can have an effect on EEG results. In addition, excessive smoking/weed etc can potentially trigger a seizure which can alter the EEG. EEGs can have quite a bit of variation even for the same individual depending on when and for how long it is done for.