Oddly enough, the first sense to disappear after entering the sensory deprivation chamber was the sense of touch due to the liquid inside the tank even though by the time the subject was submerged she had already been blindfolded. She couldn't see anything but hazes of light, but that was cut short when the chamber was sealed. The rhythmic sound of the subject's breathing was all she could hear for a few moments, but it wasn't long until the subject's heartbeat became loud as a drum which only worsened in time.
It was such a harrowing experience that most people couldn't possibly imagine, let alone endure. Every slight movement of the subject's body could be heard, from blood pulsing inside the veins to even the normal bodily functions such as the stomach, small burps the subject could not control and even the grinding of joints that sounded a lot similar to the crackling of a sheet of paper.