The New Encyclopaedia Britannica: Macropaedia : Knowledge in depth

19th century activity ancient animals anthropology auditory axiom basilar membrane behaviour body brain bronze called canal carved cause central centre changes chemical chemoreception classical cochlea colour cones cornea culture dreams early effects example female Figure frequency function Greek groups hair cells hearing hertz homosexual human important impulses individual influence inner ear insects later layer lens light literature male mammals mechanical Mechanoreception millimetres modern movement muscle nature nerve fibres NREM occurs odour olfactory optic organs outer period photoreceptor photoreceptor cells physiological pigment plays produced receptors reissued relief REM sleep response result retina rhabdom rods Roman Rome São Paulo sculpture sense sensitivity sensory sexual Shakespeare Shinto Sikh skin slavery slaves social sciences society sociology sound species statocyst stimulation structure style surface taste temperature theory tion tympanic membrane types usually vertebrates vibrations vision visual