The interaction between sex and click polarity in brain-stem auditory potentials evoked from control subjects of Oriental and Caucasian origin |
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| Affiliation: | 1. Department of Medicine, University of Hong Kong, Hong Kong Hong Kong;2. Department of Medicine, University of Sydney, Sydney, NSW 1006 Australia;1. Neurology Department and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Camperdown, Australia;2. Central Clinical School, University of Sydney, Sydney, Australia;3. Prince of Wales Hospital Clinical School and Neuroscience Research Australia, Randwick, Sydney, NSW, Australia;1. Service d’ORL et de chirurgie cervico-faciale, hôpital européen Georges-Pompidou, hôpitaux universitaires Paris-Ouest, Assistance-publique–Hôpitaux de Paris, 20, rue Leblanc, 75015 Paris, France;2. Laboratoire de recherche « Cognition and Action Group », CNRS-Université Paris-V-IRBA, UMR 8257, 75006 Paris, France;3. Faculté de médecine Paris-Descartes, université Paris-V, 75006 Paris, France;1. Service d’oto-rhino-laryngologie et de chirurgie cervicofaciale, AP–HM, Hôpital de la Conception, 147, boulevard Baille, 13005 Marseille, France;2. Laboratoire de biomécanique appliquée, UMR-T 24, Faculté de médecine–secteur Nord, Aix Marseille université, IFSSTAR, boulevard Pierre-Dramard, 13916 Marseille cedex 20, France;3. Service de radiologie et d’imagerie médicale, AP–HM, Hôpital de la Conception, 147, boulevard Baille, 13005 Marseille, France;1. Manchester Centre for Audiology and Deafness, University of Manchester, Manchester Academic Health Science Centre, UK;2. Manchester University NHS Foundation Trust, UK;3. Department of Psychology, Lancaster University, UK;1. Audiology and Speech Pathology Programme, School of Health Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia;2. Audiology Programme, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Temerloh, 53200 Kuala Lumpur, Malaysia;3. Department of Audiology, Arak School of Rehabilitation, Arak University of Medical Sciences, Markazi, Iran;4. Department of Audiology and Speech-Language Pathology, Kuliyyah of Allied Health Sciences, International Islamic University Malaysia, 25200 Kuantan, Pahang, Malaysia |
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| Abstract: | Brain-stem auditory evoked potentials (BAEPs) were performed on 30 male and 30 female young normal Oriental subjects, using both condensation and rarefaction stimulation. The effects of sex and click polarity on the BAEP latencies and amplitudes were studied. Females had shorter absolute and interpeak latencies and higher absolute amplitudes than the males. These sex-related BAEP differences were independent of the click polarity. Rarefaction clicks produced shorter wave I latency and longer I–III interpeak latency, but the differences were significant in the female only. The polarity-related BAEP amplitude differences were essentially independent of the sex. BAEPs performed on 60 sex- and age-matched young Caucasian subjects produced similar results. The importance of establishing control BAEP values according to the sex and click polarity is emphasised. |
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