CMSD 220 Speech & Hearing Science Lab 5
Audition & Hearing Disorders
In this lab, you will be describing the different types of hearing loss, how each is diagnosed, and how they impact speech perception in both children and adults, may the loss be congenital or acquired suddenly or gradually.
Distinguish between conductive, mixed, and sensorineural hearing loss, focusing on the specific structures involved in each.
What does it mean when an individual with a sensorineural hearing loss says they are able to “hear” speech but have difficulty “understanding” it? Why does this occur? Graph a long-term spectrum for continuous speech to help support your explanation, making sure to label your axes completely.
Describe the function of the middle ear and how it overcomes the impedance mismatch between the middle and inner ears. Make sure to reference specific dBSPL levels for each aspect that contributes to this process.
Draw the tonotopic mapping of the basilar membrane and discuss how the ‘traveling wave theory’ explains cochlear pitch perception.
Explain how otitis media can result in a temporary conductive hearing loss and how this can impact a child’s language abilities and later academic functioning.
Explain the relationship between speech perception and disabilities such as specific language impairment and developmental dyslexia.
What relationship do OAEs and ABR (tone burst) result have with behavioral thresholds?
Explain the “redundancy” in speech perception and how it influences the
ability to recognize acoustic cues.
Explain the significance of the ear canal being a quarter-wave resonator and its
role in amplifying high-frequency sounds.