Cochlea: Hair cells are the ones that are responsible for transduction from sound vibration to electrical energy and they are located in the inner ear. Vibrations of sound are the ones that cause vibrations in air molecules and they shake up the ear drum. As the eardrum is moving, it's causing bones that are located in the middle ear to vibrate, too. They are further passed to the cochlea.
Retina: is the part of visual system and it contains sensory cells named rod, and the cone cells. In retina, they have a role of converting physical energy in shape of light signals into electrical impulses, which later travel to the brain. Then the adaptable change occurs and it forms a motion of series of molecules which give, as a result, reduction of the photoreceptor.
