Sensory deprivation allows the mind to enter into the theta state, a somewhat dreamlike state that most people only experience when on the cusp of sleep or right after waking in the morning. These lower frequency brain waves, primarily generated by the right hemisphere (the hemisphere associated with creative, non-linear thought), have been called “the state of inspiration” and there is evidence, both anecdotal and scientific, to support an increase in feelings of creativity and deeper realisations accompanying these type of brain waves.