Hearing and the Structure of the Ear Answers

Responses may vary but should include some or all of the following information: Place theory states that the perception of pitch depends on what area of the basilar membrane is vibrating. In other words, the frequency of tone that is detected by the brain depends on which area of the basilar membrane is most actively vibrating upon encountering sound. Frequency theory claims that the perception of pitch depends on the rate at which the entire basilar membrane vibrates. The whole basilar membrane vibrates in response to sound. A higher pitch is heard when the basilar membrane vibrates at a higher frequency. Responses may vary but should include some or all of the following information: Place theory states that the perception of pitch depends on what area of the basilar membrane is vibrating. In other words, the frequency of tone that is detected by the brain depends on which area of the basilar membrane is most actively vibrating upon encountering sound. Frequency theory claims that the perception of pitch depends on the rate that the entire basilar membrane vibrates. The whole basilar membrane vibrates in response to sound. A higher pitch is heard when the basilar membrane vibrates at a higher frequency.

Responses may vary but should include some or all of the following information: Sound waves are detected by the pinna and channeled down the external auditory canal to the eardrum. A chain of bones called the ossicles (made of the malleus, the incus, and the stapes) amplify the vibrations from the eardrum and transmit them to the cochlea, which is a spiral, fluid-filled tube that contains auditory receptors called hair cells. The hair cells transduce the sound vibrations, and the auditory nerve carries these neural signals to the thalamus for initial processing. Then the neural signals are relayed to the auditory cortex, which is located in the temporal lobe. In the auditory cortex, adjacent neurons, or neurons that are closer together, tend to respond to certain frequencies. Other neurons combine the information from these specialist cells to help one recognize and distinguish sounds. Responses may vary but should include some or all of the following information: Sound waves are detected by the pinna and channeled down the external auditory canal to the eardrum. A chain of bones called the ossicles (made of the malleus, the incus, and the stapes) amplifies the vibrations from the eardrum and transmits them to the cochlea, which is a spiral, fluid-filled tube that contains auditory receptors called hair cells. The hair cells transduce the sound vibrations, and the auditory nerve carries these neural signals to the thalamus for initial processing. Then the neural signals are relayed to the auditory cortex, which is located in the temporal lobe. In the auditory cortex, adjacent neurons, or neurons that are closer together, tend to respond to certain frequencies. Other neurons combine the information from these specialist cells to help one recognize and distinguish sounds.

Responses may vary but should include some or all of the following information: Conductive hearing loss occurs when something interferes with the transmission of sound from the outer and middle ear to the inner ear. Sensorineural hearing loss occurs from damage to the auditory nerve or to the hair cells in the inner ear. Responses may vary but should include some or all of the following information: Conductive hearing loss occurs when something interferes with the transmission of sound from the outer and middle ear to the inner ear. Sensorineural hearing loss occurs from damage to the auditory nerve or to the hair cells in the inner ear.