SIG 6 Perspectives Vol. 16, No. 1, July 2012
This issue of Perspectives focuses on current issues concerning head trauma and the impact on the eighth nerve senses. First, we discuss auditory dysfunction as a long-term consequence of mild traumatic brain injury (mTBI); auditory problems such as tinnitus, dizziness, and difficulty processing auditory information are some of the reported symptoms. We review mechanisms of possible injury and the evidence for peripheral and central auditory problems, as well as the possible influences of cognitive and psychological factors. Next, we discuss mTBI and associated effects on the auditory system, which range from tympanic membrane perforations to an inability to focus on or understand speech in noisy environments. We include a review of the effects and underlying mechanisms of mTBI and a summary of associated effects and how they may be reflected in audiometric tests. Finally, we discuss current perspectives on blast injury and inner ear function, focusing on dizziness following head injury, and review research concerning blast exposure and vestibular and ocular motor function, along with future directions for research.
You will be able to:
- evaluate the evidence base for central auditory dysfunction and the need for audiological services in the population of individuals following mild traumatic brain injury (mTBI)
- describe possible relationships between self-reported auditory symptoms and cognitive and psychological symptoms.
- describe the four mechanisms of blast injury and its effects on the tympanic membrane and middle ear function.
- list at least three symptoms of central auditory processing dysfunction (by patient report and as identified with clinical tests) that may be associated with mTBI
- describe historical views of vestibular dysfunction and recent research on semi-circular canal dysfunction and otolith dysfunction following blast injury.
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View the Table of Contents [PDF]