A39334900 HW1 - Kaitlyn Rial A39334900 I need my ears to hear what is going on around me Horns honking sirens blaring tires screeching or even the

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A39334900 I need my ears to hear what is going on around me. Horns honking, sirens blaring, tires screeching or even the faint “ding” of the gas or engine light are all sounds that mean something when driving a vehicle. Having the ability to adhere to these noises can mean life or death in a driving situation. To hear sounds such as those listed, the ears use a process by which it transforms vibrating sound waves into neural activity, which then produces sound. Sound waves enter through the outer ear which transmits them to the eardrum, which is a tight membrane that vibrates with the waves. This area is known as the middle ear, which then sends the vibrations through a piston to the cochlea. The cochlea is composed of the hammer, anvil, and stirrup. Vibrations in the cochlea cause hair cells, known as the basilar membrane, to move. Motion of these hair cells triggers impulses in nerve fibers that connect to form an auditory nerve, which result in neural messages that are sent through the thalamus to the temporal lobes of the auditory cortex. The loudness of these sounds depends on the amount of hair cells that are vibrated. The loudness is a good gage in concealing safety and alertness on the road. Also, our ears are placed in such positions that allow us to experience “three-dimensional” hearing called stereophonic. This gives us the privilege to locate sound making sounds from the right louder to the right side and vice-versa. I need depth perception to distinguish what I am sharing the road with. It’s about 3 o’clock in the afternoon on a Thursday. You just got off work and are driving home. About a quarter mile up the road you can see the end of what seems to be an accident. A process called depth perception
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This note was uploaded on 03/30/2008 for the course PSY 101 taught by Professor Jackson during the Fall '08 term at Michigan State University.

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A39334900 HW1 - Kaitlyn Rial A39334900 I need my ears to hear what is going on around me Horns honking sirens blaring tires screeching or even the

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