How Age Affects Hearing

Decent Essays
The concept of this project is to test how age affects hearing. Hearing is important because it is a survival tactic and form of communication. Hearing loss causes many difficulties, and it is important to realize that hearing will not always be there. This study was inspired by ongoing studies about the relationship of hearing and age. Humans can hear frequencies from 20 Hz to 20,000 Hz. Humans tend to hear sounds between 300 to 4,000 Hz because human speech is centered around these tones. The pitch of a sound depends on its frequency. The separation of frequencies occurs in the cochlea. A high note causes one area of the cochlea’s basilar membrane to vibrate, and a low pitch has the same effect on a different part of the cochlea’s basilar…show more content…
This process is called presbycusis. Presbycusis mostly changes the way the inner ear is shaped, causing sounds to be processed differently. It can also occur from changes in the middle ear, or changes in the nerves leading to the brain. Sometimes, sounds are heard at a lower pitch or not heard at all. The higher frequencies are more commonly affected by presbycusis. Sensorineural hearing loss is caused by over stimulated cells that die through oxidative cell death. This hearing loss is most commonly noise induced and not commonly associated with age. However, this hearing loss can be hereditary. People with this type of hearing loss have a harder time hearing lower frequencies. Both types of hearing loss effect this test. Other causes of hearing loss are family medical history, informalities in the brain or ears, and drugs. Drugs tend to be a cause of short term hearing loss, but they could cause permanent damage. Gender is another factor that could affect hearing. Some studies are beginning to show that women lose the lower frequencies and men tend to lose higher frequencies. This difference is due to hormones and cardiovascular disease. CDV can occur in both men and women, but is more likely in women. Decreased blood flow to the ears is caused by the damaged blood
Get Access