dick head

Consciousness is the awareness of the sensations, thoughts, and feelings being experienced at a given moment. Consciousness is divided into two broad states: waking and altered states of consciousness. In waking consciousness, we are awake and aware of our thoughts, emotions, and perceptions. When we enter an altered state of consciousness, our mental state differs from waking consciousness. Sleeping and dreaming our natural altered states of consciousness. Unnatural ones include hypnosis, and ones caused by drug use.

Sleep occurs in four different stages of sleep. Stage 1 sleep is the state of transition between wakefulness and sleep, characterized by relatively rapid, low-voltage brain waves. Stage 2 sleep is a sleep deeper than that of stage 1, characterized by a slower, more regular wave pattern, along with momentary interruptions of “sleep spindles”. Stage 3 sleep is a sleep characterized by slow brain waves, with greater peaks and valleys in the wave pattern. Stag...