By Paul Van de Heyning, Andrea Kleine Punte
Electrical acoustic stimulation (EAS) combines electrical stimulation within the mid to high-frequency areas with acoustic stimulation within the low-frequency variety with the purpose to maintain residual low-frequency listening to after cochlear implantation, which jointly rather improves speech knowing, pitch discrimination and track appreciation. during this quantity, the main skilled scientific teams percentage their realizing of using EAS in adults and youngsters. It bargains an in-depth audiological research on the topic of deciding upon, getting ready and rehabilitating EAS sufferers. issues equivalent to lifeless area overview, psychophysics of low-frequency listening to, electric-acoustic interplay, speech algorithms, track conception, in addition to becoming and the patient's recognition are mentioned. Introductory chapters - illustrated with unheard of color pictures - on cochlear neural reserves, molecular biology and high-technological electrode improvement specialize in the elemental medical EAS learn. each ENT professional, audiologist, speech therapist and scientist attracted to internal ear pathology, all in favour of cochlear implantation or facing the remedy or surgical procedure of the interior ear will enjoy the insights and reports of the world's major specialists who contributed to this ebook.
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Extra resources for Cochlear Implants and Hearing Preservation (Advances in Oto-Rhino-Laryngology, Vol. 67)
9 Roland PS, Wright CG, Isaacson B: Cochlear implant electrode insertion: the round window revisited. Laryngoscope 2007;117:1397–1402. 10 Linder T, Schlegel C, DeMin N, van der Westhuizen S: Active middle ear implants in patients undergoing subtotal petrosectomy: new application for the Vibrant Soundbridge device and its implication for lateral cranium base surgery. Otol Neurotol 2009;30:41–47. 11 Eshraghi A, Jolly C, Balkany T: Smallfenestra cochleostomy for MED-EL electrode. Cochlear Implants Int 2004;5:71– 75.
Anat Rec A Discov Mol Cell Evol Biol 2006;288:473–481. 21 Keithley EM, Wang X, Barkdull G: Tumour necrosis factor alpha can induce recruitment of inflammatory cells to the cochlea. Otol Neurotol 2008;29:854–859. 22 Dinh CT, Haake S, Chen S, Hoang K, Nong E, Eshraghi AA, Balkany TJ, Van De Water TR: Dexamethasone protects organ of Corti explants against tumor necrosis factor-alpha-induced loss of auditory hair cells and alters the expression levels of apoptosis-related genes. Neuroscience 2008;157:405–413.
8. Disposable intracochlear catheter prototype. The front end of the catheter shows 6 black dots, 5 mm apart; 15–20 mm insertion depth can easily be achieved in temporal bones. Cross-sectional shape and area are the same as an electrode but without wires or contacts, making the device extremely flexible. A Luer lock allows easy attachment of a Hamilton syringe (20 ml volume). a b c Fig. 9. a The catheter after priming and 20 mm insertion into a scala tympani model. b After injection of 10 μl of contrast agent.