Variations in microanatomy of the human cochlea.
Bottom Line: At the lateral region, the height decreased significantly at the beginning of the second turn.We found a correlation between the length of the RC and that of the ST.These differences could have considerable implications for approaches to the design of CI arrays, especially in terms of their ability to preserve residual hearing during insertion of the electrode array.
Affiliation: Cluster of Excellence Hearing4all, Institute of AudioNeuroTechnology and Department of Experimental Otology, Ear, Nose, and Throat Clinics, Hannover Medical University, Hannover, 30625, Germany.Show MeSH
Related in: MedlinePlus
Mentions: Basic measurements of the cochlear dimensions included cochlear axis height, width of the cochlear base, and length of the cochlear base (Fig. 3). All results are included in Table1 and show variability of the basic cochlear parameters ranging from 12 to 19% of the maximum value. There was a significant positive correlation between length of the cochlear base (LCB) and width of the cochlear base (WCB) (R2 = 0.71, P < 0.01; Fig. 4). Interestingly, not only the length but also the number of cochlear turns was variable, the mean being 2.64 ± 0.17 (949 ± 62°), ranging from 2.39 to 2.84 (859–1,024°). This demonstrates that the individual cochleae are not simply scaled versions of the same blueprint but have truly different morphologies.
Affiliation: Cluster of Excellence Hearing4all, Institute of AudioNeuroTechnology and Department of Experimental Otology, Ear, Nose, and Throat Clinics, Hannover Medical University, Hannover, 30625, Germany.