, ▁the ▁two ▁structures ▁together ▁forming ▁a ▁cone - sh aped ▁plug ▁tight ly ▁filling ▁up ▁the ▁for amen ▁mag num ." ▁ ▁In ▁ 1 9 2 0 , ▁Adolf ▁Meyer ▁confirmed ▁the ▁path ologies ▁of ▁brain ▁h erni ation . ▁He ▁commented : ▁ ▁" The ▁fal x ▁and ▁tent or ium ▁const itute ▁an ▁important ▁protection ▁against ▁any ▁sudden ▁impact s ▁of ▁pressure ▁by ▁keeping ▁apart ▁heavy ▁port ions ▁of ▁the ▁brain , ▁but ▁they ▁also ▁provide ▁an ▁opportunity ▁for ▁trouble ▁in ▁case ▁of ▁sw elling ▁or ▁need ▁of ▁disp lacement ." ▁ ▁The ▁work ▁of ▁Col lier ▁and ▁Meyer ▁described ▁i ps il ater al ▁hem ip ares is , ▁a ▁false ▁local izing ▁sign . ▁However , ▁it ▁became ▁known ▁as ▁the ▁K ern oh an - W olt man ▁phenomen on . ▁ ▁K ern oh an - W olt man ▁In ▁ 1 9 2 9 , ▁K ern oh an ▁and ▁Wol t man ▁published ▁their ▁work ▁on ▁brain ▁les ions ▁that ▁showed ▁i ps il ater al ▁hem i ple gia . ▁In ▁their ▁paper , ▁they ▁state : ▁ ▁" The ▁tum our ▁was ▁often ▁large ▁enough ▁to ▁dis place ▁the ▁brain ▁toward ▁the ▁opposite ▁side ▁and ▁also ▁to ▁cause ▁h erni ation ▁through ▁the ▁tent or ium . ▁Such ▁h erni ation ▁and ▁disp lacement ▁may ▁be ▁ev iden ced ▁by ▁a ▁gro ove ▁swe eping ▁over ▁the ▁un cin ate ▁g yrus ▁on ▁the ▁side ▁of ▁the ▁tum our . ▁On