Other aspects of the added sound patterns appear to be designed to provide subtle, almost subliminal suggestions to the mind as to what is desired by way of further expanded consciousness so as to support the verbal suggestions and instructions also contained on the tape.
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Sparkler (Wikipedia)A sparkler is a type of hand-held firework that burns slowly while emitting bright, colored sparks. It burns at a high temperature (over 1000 °C), so it can be very dangerous.