▁his ▁legend ary ▁Ac id ▁Test s . ▁ ▁In ▁early ▁ 1 9 6 6 ▁Andy ▁War hol ' s ▁lights ▁engineer ▁D anny ▁Williams ▁pione ered ▁the ▁use ▁of ▁multiple ▁st rob os cop es , ▁sl ides ▁and ▁film ▁pro jections ▁simultaneously ▁on stage ▁during ▁the ▁ 1 9 6 6 ▁Ex pl oding ▁Pl astic ▁I ne v itable ▁shows , ▁and ▁at ▁Bill ▁Graham ' s ▁request , ▁Williams ▁built ▁an ▁en hanced ▁st rob os cop ic ▁light ▁show ▁to ▁be ▁used ▁at ▁F ill more ▁West . ▁ ▁St ro be ▁lights ▁and ▁ep ile ps y ▁▁ ▁Sometimes ▁stro be ▁light ing ▁can ▁trigger ▁se iz ures ▁in ▁photos ens itive ▁ep ile ps y . ▁An ▁inf am ous ▁event ▁took ▁place ▁in ▁ 1 9 9 7 ▁in ▁Japan ▁when ▁an ▁episode ▁of ▁the ▁Pok ém on ▁an ime , ▁D enn ō ▁S ens hi ▁P ory gon ▁( comm only ▁translated ▁as ▁Electric ▁Sold ier ▁P ory gon ), ▁featured ▁a ▁scene ▁that ▁dep icted ▁a ▁huge ▁explos ion ▁using ▁extremely ▁bright ▁flash ing ▁red ▁and ▁blue ▁lights ▁with ▁a ▁stro be ▁effect ▁at ▁about ▁ 1 2 ▁H z , ▁causing ▁about ▁ 6 8 5 ▁of ▁the ▁view ing ▁children ▁to ▁be ▁sent ▁to ▁hosp it als . ▁Although ▁ 9 5 % ▁of ▁the ▁ 6 8 5 ▁just ▁compla ined ▁of ▁d izz iness , ▁some ▁were ▁hospital ized . ▁Organ izers ▁later ▁said ▁that ▁they ▁did