“…Previous studies have demonstrated that there is a certain level of conformity in the M-and T-level profiles, both of which tend to increase toward the basal end of the cochlea [Smoorenburg, 2007]. This increase has been observed for cochlear implants produced by different manufacturers (Cochlear Corp., Lane Cove, Australia; Advanced Bionics, Sylmar, Calif., USA; MedEl Corp., Innsbruck, Austria) [Baudhuin et al, 2012;Botros and Psarros, 2010;Cafarelli et al, 2005;D'Elia et al, 2012;Lai et al, 2009;Miller et al, 2008;Polak et al, 2005;Smoorenburg et al, 2002;Thai-Van et al, 2001;van der Beek et al, 2015;Vargas et al, 2013]. Furthermore, both perimodiolar and more lateral electrodes (Nucleus Straight vs. Contour) show higher levels basally [Polak et al, 2004].…”