We hooked him up with wires and headphones and even taped the bone conduction device to his forehead so that we wouldn't have to touch him once he fell asleep.The bone conduction test is used to send sound signals straight through his skull which bypasses the middle ear altogether. This test is a good way to determine how good inner ear and nerves are working. This test showed that his inner ear can detect sounds as low as 30db. A fully developed hearing system can generally hear down to about 20db so this is pretty good especially becuase infants hearing generally continues to improve.
Unfortunately he struggled a bit before falling asleep and knocked the headphones off before could test his total hearing ability. He woke up when we put his headphones back on him but fell asleep quickly afterwards and then he slept for ages. This was enough time for the audiologist to get an excellent sample of information including different pitched sounds. She said that this test showed a small improvement since the last test, but at this age a child's hearing ability fluctuates from day to day.The audiologist hasn't analysed the results properly yet and said it will be about a week before the results can be posted to all of the parties involved with his hearing.
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