Fig. 7
Case 4. Sensible auditory behavior. ECR1 test result shows a threshold intensity of 20 dBHL for apical and middle electrodes, and 30 dBHL for basal electrode with slope and amplitude ECR higher than previous cases for all electrodes. After decreasing M level and keeping T level nearly unchanged for all electrodes, ECR2 test result shows a threshold intensity of 20 dBHL and a significant ECR slope and amplitude reduction for all electrodes. Apical electrode initial artifact is typical for this device brand