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Shooting for right-handers may increase the magnitude for the ear
effect but I believe it is also present when noise exposure is not
known to be more pronounced on either side (Chung et al.,
1983). It may be worth noting that there are asymmetries in
olivocochlear function which others have suggested may relate to
protection from noise. However, if I remember correctly these
asymmetries were demonstrated in humans using contralateral
suppression of TEOAEs which is representative of medial
olivocochlear function. However, it seems that the lateral
olivocochlear bundle is a better candidate for aiding in protection
against noise. Mark Mark Shaver, PhD, CCC-A
Clinical Educator/Audiologist Wichita State University Evelyn Hendren Cassat Speech-Language-Hearing Clinic (316) 978-6352 IMPORTANT NOTICE: This message is intended only for the use of the individual entity to which it is addressed and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If you have received this message in error, you are hereby notified that we do not consent to any reading, dissemination, distribution or copying of this message. If you have received this communication in error, please notify the sender immediately and destroy the transmitted information. On 04/14/2011 07:55 AM, Bob Masta wrote: I don't know if this is relevant, but I have heard audiologists say that it is well-known that (right-handed) rifle shooters tend to have more left-ear loss, because their head shields their right ear from the muzzle wave. The opposite is the case for (right-handed) pistol shooters. Is it possible that your colleague sees lots of military (and former military) patients? The military uses mostly rifles, not pistols, and most people are right-handed. Just a thought... Best regards, Bob Masta ================== On 14 Apr 2011 at 12:56, Peter van Hengel wrote:Dear list, a colleague of mine is very interested in unilateral hearing loss. He's been working in audiology for over 30 years and claims that in his experience it is much more common for the left ear to be affected than the right. Furthermore, if the right ear is affected, and the person is also right-handed, the problems with processing auditory information are much larger than in cases of left-sided hearing loss and/or left-handedness. However, he does not know of any publications on the subject. Is there anyone on the list who knows? All the best, Peter van Hengel Audiologisch Centrum Twente the Netherlands |