Consciousness is caused by a type of white noise that is produced by the constant flicker of billions of axons and dendrites in the brain. The amount of noise is generated by a conglomeration of various neurotransmitters like dopamine, glutamate, serotonin and adenosine - which are randomly released by individual axon nerves and cross a small gap called a synaptic cleft and absorbed by a dendrite nerve on the other side. The quantity and quality of the neurotransmitters being released in various sections of the brain generates what we see as a waking cognition in all animal life such as frogs, lizards, dogs and chimpanzees.
Our level of consciousness is generated by the fusion of 3 sets of brains that are interacting with each other - the left and right hemispheres and the frontal lobe. The left/right brains generate a constant parade of images from memories and is degraded by the loose connections from the neurotransmitters. These noisy degraded memories are then filtered out by the frontal brain acting as a type of referee - amalgamating the remaining fragments of memories into newly refreshed ones.
When the degradation and amalgamation of the memories are just right, brand new confabulated thoughts emerge thus producing what we experience as new ideas. When a large enough amount of newly confabulated images arise all at once, a "Eureka Moment" is experienced. This autonomous stream of noisy fragmented memories from your brain can be sensed in deep meditation or in a sensory deprivation chamber.
In 1975, a scientist by the name of Stephen Thaler began to experiement with a crude network of on-off switches by randomly disturbing their individual connections and witnessed the emergence of a stream of consciousness. Since that time, he has invented a number of machines that teach themselves, connect themselves and even build themselves with no input from human programming. His machines emulate the way that the human brain operates by the simple function of noise, in effect, rediscovering what neurophysiologists are learning through the science of neuroanatomy.
Stephen Thaler