ILE EXAM QUESTIONS AND ANSWERS

What's the AC threshold test frequency order? - Answer- 1000, 1500, 2000, 3000, 4000, 6000, 8000 re-test 1000, 750, 500, 250 * we re-test at 1000 because it establishes consistency What's the BC threshold test frequency order? - Answer- * present the initial tone 20 dB above AC threshold * re-established threshold * ascend/descend method 1000, 2000, 3000, 4000 re-test 1000, 500, 250 (dependent) What's the heliocatrema? - Answer- A semilunar opening at the apex of the cochlea through which the scala vestibuli and scala tympani communicate with one another How do we know Interaural (between ears) attenuation (reduction) is occuring based on audiogram results? - Answer- IA attentuation varies per transducer and frequency 1. Supraural - 40- 50 dB gap between left and right thresholds at same frequency 2. Insert- 50-70 dB gap between left and right threshold at same frequency 3. BC oscillator - 0 dB gap because EVERYTHING CROSSES OVER! when the sound is presented at a high enough intensity that the cochlea of the NTE hears the sound via BONE CONDUCTION - Answer- Crossover A method of masking the nontest ear in which masking is introduced progressively over a range of intensity levels until a plateau is reached, indicating the level of masked threshold of the test ear - Answer- Plateau method What's the psychological effect of frequency? - Answer- Pitch! (Hz) Physical measurement of cycles per second - compression and rarefraction What's the psychological effect of Intensity? - Answer- Loudness (dB) p