I had somewhere between 16-20 ultrasounds. I had a high risk pregnancy and they were keeping a close eye on the baby. Each ultrasound cost around $700 plus the costs from the doctor and lab for reading the results. Luckily our insurance picked up the cost after we paid $2500 out of pocket. Even with all that expense my daughter was totally worth it and is perfect.
Part of the difficulty in answering this question is that depth and cause of coma may vary, and memory is impaired during coma so people might hear but not be able to recall what they hear. In brief: Hard to know. It is hard to know if people in a coma can hear you.
NASA Recorded Sounds In Space, The Results Will Amaze You [Video] We all know that there is no sound in space, but NASA has proof sounds can actually be heard when recorded by special equipment. In a chilling video posted to YouTube, we can hear that space is not as silent as we thought. Hollywood has led us to believe that there are sounds in space, but that is misleading, to say the least. The special sound effects, used in movies such as Gravity, would suggest that you hear things in space, but do you?