8. What causes negative afterimages and what is unique about colors in a negativ

Question

8. What causes negative afterimages and what is unique about colors in a negative afterimage? 9. Sound waves hit the ear and sound vibrations cause other structures to vibrate. Number chese structures in order of movement/stimulation: malleous (hammer) cochlear fluid incus (anvil) tympanic membrane L stapes (stirrup) receptor cell 10. With age there may be progressive hearing loss called presbycusis and it typically begins with hearing loss of high frequencies. With this type of hearing loss, what area of the basilar membrane cochlea may be affected the most, the base or the apex?

Explanation / Answer

8) Negative after images are caused when eyes photoreceptors (rods and cones) are prone to over stimulation and lose sensitivity. negative afterimages exhibit colours complementary to the stimus or on prolonged stimulus.they are best seen against a brightely light background.

9) path of sound

10) presbycusis is caused due to the stiffening of the basilar membrane of the cochlea ,effecting the movement.

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