Otoacoustic emissions are clinically important because they are the basis of a simple, non-invasive test for hearing defects in newborn babies and in children who are too young to cooperate in conventional hearing tests. Many western countries now have national programmes for the universal hearing screening of newborn babies. Periodic early childhood hearing screenings program are also utilizing OAE technology. One excellent example has been demonstrated by the Early Childhood Hearing Outreach Initiative at the National Center for Hearing Assessment and Management (NCHAM) at Utah State University, which has helped hundreds of Early Head Start programs across the United States implement OAE screening and follow-up practices in those early childhood educational settings. The primary screening tool is a test for the presence of a click-evoked OAE. Otoacoustic emissions also assist in differential diagnosis of cochlear and higher level hearing losses (e.g., auditory neuropathy).
I must admit I am surprised that with the concept of Nourishing Traditions being about adopting traditional methods of preparing foods as observed in ultra-healthy non-western people groups, I expected the book on baby and child care to promote more traditional and indigenous ways of nurturing (not just nourishing) little ones, such as babywearing and co-sleeping. I guess we always have The Continuum Concept by Jean Liedloff for that!
In conjunction with audiometric testing, OAE testing can be completed to determine changes in the responses. Studies have found that exposure to noise can cause a decline in OAE responses. In a study, industrial workers who were exposed to 84.5 dBA of noise were compared to workers who were exposed to 53.2 dBA of noise by considering hearing thresholds and OAEs before and after 5 days of work. This study revealed that hearing thresholds and OAE results were significantly lower among the workers who were exposed to higher levels of noise.
Jump up ^ Marshall, Lynne; Miller, Judi A. Lapsley; Heller, Laurie M.; Wolgemuth, Keith S.; Hughes, Linda M.; Smith, Shelley D.; Kopke, Richard D. (2009-02-01). "Detecting incipient inner-ear damage from impulse noise with otoacoustic emissions". The Journal of the Acoustical Society of America. 125 (2): 995–1013. Bibcode:2009ASAJ..125..995M. doi:10.1121/1.3050304. ISSN 0001-4966.
- An apparent misunderstanding about baby-led weaning. The book says that baby-led weaning is to be resisted and that baby's parents should be squarely in charge of what baby eats from the beginning. I did a combination of purees and baby-led weaning with both my children, and I was always squarely in charge of what they ate and what they were offered. Part of my role as a mother is to prepare nourishing foods for my children. Whether they pick at it and hand-feed themselves or whether I offered it mushed up on a spoon is irrelevant. The book fails to recognise that a child can only choose food from that which they have been offered or is available. If only nourishing food is offered and available, then that is what the child will choose.