Ear, Hearing, Special Senses, Cow Eye

two point discrimination

density of touch receptors varies in different areas of the body, use the jamar discriminator to test that

conduction deafness

sound waves can’t reach the eardrum

involves middle ear

conduction deafness examples

ear infection, impacted earwax, foreign objects, fluid buildup

sensorineural deafness

signals can’t be conducted to the brain

involved inner ear

sensorineural deafness examples

age, nerve damage, genetics, congenital conditions

weber test

detects unilateral conductive and sensorineural hearing loss

rinne test

evaluates hearing loss by comparing sound conduction through air and bone

equilibrium

ability to maintain balance

fluid moving around in semicircular canals transmits info about our location to the brain

where does our sense of balance come from?

integration of signals from eyes, semicircular canals, muscles, and joints