The Five Senses of Man

able according action apparatus appear auditory blue body brain called caused centre closed colours combination considerably consists direction distance distinct distinguish double edge entire exactly excited existence experience explained external fact fall fibres figure fingers fixed follows fundamental tone further gives greater green hand harmonics hearing imagine impression increases instance irritation kind latter lens less light limits locality look manner means motion move muscles nature nerve nerve-fibre object observed optic nerve organs passes perceive perception person picture position possess pressure produced rays recognise refraction represented retina seen sensation sense sensitive fields sensory circle separate side similar simple single situated skin soon sound space spectrum string sufficient surface takes place terminal tion tone touch tube tympanic membrane vibrations violet vision whilst whole yellow