In 2002 worked on this series where I set three people under stress: the had to stand in one point, holding the flower in one height while being surrounded by lights which created heat. Six loudspeakers (2 left, 2 right, 2 behind) were playing Atari Teenage Riot very loud, without bass, in max. level treble and in different speeds. In the end it was pure noise, almost unbearable.
Surpisingly they hold their positions for almost one hour. Afterwards they explained that they lost track in time while standing in.