Action spectra of 3 anticholinergic drugs with preferential central activity (2 phenyl-2-isobutyl) ethyl pyrrolidone (1067 CERM), 2(ethyl n-propyl-amino ethyl alpha, alpha-diphenylglycolate (AP 1288) and dimethylamino-9-benziloxybicyclo (3,3,1)nonane (N1199) |