▁the ▁medical ▁clin ic ▁of ▁the ▁H ôtel - D ieu ▁in ▁Paris . ▁In ▁ 1 9 0 1 ▁he ▁was ▁named ▁president ▁of ▁Société ▁d ’ O t ologie ▁et ▁de ▁L ary ng ologie ▁de ▁Paris . ▁He ▁was ▁a ▁member ▁of ▁the ▁Institut ▁Psych ologique ▁( from ▁ 1 9 0 2 ) ▁and ▁the ▁Société ▁de ▁Ne uro log ie ▁( from ▁ 1 9 0 3 ). ▁ ▁He ▁special ized ▁in ▁research ▁of ▁aud itory ▁and ▁vest ib ular ▁systems ▁and ▁their ▁dis orders . ▁The ▁e pon ym ous ▁" B onn ier ▁synd rome " ▁is ▁a ▁synd rome ▁character ized ▁by ▁de af ness , ▁oc ular ▁dist urban ces ▁and ▁other ▁sympt oms ▁due ▁to ▁a ▁les ion ▁of ▁the ▁nucle us ▁of ▁De it ers . ▁Ar ound ▁ 1 9 0 5 ▁he ▁introduced ▁the ▁term ▁as ch ém atie ▁( as ch emat ia ) ▁for ▁a ▁group ▁of ▁sympt oms ▁indicated ▁by ▁an ▁in ade qu ate ▁account ▁of ▁the ▁space ▁occupied ▁by ▁some ▁part ▁of ▁the ▁body . ▁ ▁Selected ▁works ▁▁ ▁Vert ige , ▁ 1 8 9 4 ▁– ▁Vert igo . ▁ ▁L ' ore ille , ▁ 1 8 9 6 ▁– ▁The ▁ear . ▁ ▁L ' aud ition , ▁ 1 9 0 1 ▁– ▁H ear ing . ▁ ▁Le ▁sens ▁des ▁att itudes , ▁ 1 9 0 4 ▁– ▁S ens ory ▁dispos itions . ▁ ▁La ▁voix