How does unwanted sound effect the physiological and psychological
I) Research Question:
a) How does “unwanted” sound effect the physiological and psychological performance differently than “wanted” sound?
II) Thesis Statement:
a) “Wanted” and “unwanted” sound have the same physiological effects on the human body but effect its psychological performance differently.
IV) Literature Review:
a) The Human Ear
b) How sound is “heard”/perceived by the body
a) Physiological effects of sound (both wanted and unwanted)
b) Psychological effects of sound (both wanted and unwanted)
VII) Limitations and/ or ...view middle of the document...
But not all sound is “unwanted”. Many people listen to music, and go out to clubs and parties without suffering from any of the negative symptoms of “unwanted” sound. Many people enjoy playing instruments like the piano or the trumpet. “Wanted” sound, unlike “unwanted” sound can relief stress, and relaxation and the calming of a person. However on the physiological aspects, “wanted” sound can be just as harmful as “unwanted sound”. There are many misconceptions about sound and hearing, and the greatest misconception is about loud sound not being harmful as long as it is wanted.
The human body perceives sound through the sensory organ called the ear. Humans have two ears, where sound waves enter and transform into signals that can be perceived as “hearing”. Hearing is a complicated process. Everything that moves makes a sound. Sound consists of vibrations that travel in waves which enter the ear and are changed into nerve signals that are sent to the brain. The brain interprets the signals as sounds.
Sound is measured in decibels (dB), where zero is the lower limit of audibility, and 130 dB is the pain threshold. A 10-dB increase equals a doubling in volume: a 75-dB sound is twice as loud as a 65-dB sound. Complete quietness is equal to 20dB of sound. Since everything that moves makes sound, although some of the sounds are so small that they cannot be perceived by the human body, because the sound waves spread out and become too weak to be “heard”.
The ear can be separated into three sections, the outer ear, the middle ear, and the inner ear. The outer ear is a sound gathering device. The shape allows it to capture sound and funnel it into the ear. The outer ear also serves to protect the ear from dust and other particles from entering and causing damage to the auditory organs. The skin on the outer third of the canal has hairs, sweat glands, and glands that produce earwax. Earwax helps protect the eardrum by trapping dirt that would otherwise lodge against the membrane.
Sound is then taken into the middle ear by the auditory canal where the process of hearing begins. The middle ear is a chamber filled with air, which contains an amplifying system composed of three linked bones. These bones are responsible for the mechanical transfer of sound waves. These bones are the malleus, or hammer, the incus, or anvil, and the stapes, or stirrup, which is the smallest bone in the body.
The hearing process begins when sounds enter the ear and reach the eardrum, causing it to vibrate. The eardrum is also known as the tympanic membrane, because of its characteristic to vibrate in a beat. The malleus, near the eardrum begins to vibrate in the same rhythm as the eardrum, and by a lever action, transmits the message to the incus. In the same way, the incus transmits the message to the stapes. The stapes, being so small, fits into a small membranous opening, and relays the vibrations to the inner ear. The footplate of...