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This Concept Map, created with IHMC CmapTools, has information related to: Johnson J. Ch.4 23, Break into 2 concepts e.g. animals and humans evolved different sleep patterns to avoid being present during their predators' normal hunting times at night, theta wave activity increases and alpha wave activity fades away can experience hypnogogic images or hallucinations, and hypnic jerks, being in an altered state may mean being in a state of increased alertness for example under the influence of stimulants, are voluntary, but inhibited, meaning that the person moves very little muscles a relatively active type of sleep when most of a person's dreaming takes place., the slowest and largest waves make up their appearance; the deepest stage of sleep what happens growth hormones are released from the pituitary gland and reach their peak, Melatonin influenced by Suprachiasmatic Nucleus (SCN), a set of action potentials in the communication amon g neurons just sufficient to produce a experience in our awareness, NREM 3&4: Delta Waves Roll In what occurs the slowest and largest waves make up their appearance; the deepest stage of sleep, Adaptation Theory of Sleep defined as sleep is a product of evolution., Sleep problems include Sleep Deprivation, Altered State of Consciousness symptoms include thoughts becoming fuzzy, Adaptation Theory of Sleep proposed animals and humans evolved different sleep patterns to avoid being present during their predators' normal hunting times at night, a set of action potentials in the communication amon g neurons just sufficient to produce a memory, Sleep is made up of stages Non-REM (NREM) Sleep, Waking Consciousness much time is spent thoughts, Non-REM (NREM) Sleep what happens NREM 3&4: Delta Waves Roll In, Consciousness generated by a set of action potentials in the communication amon g neurons just sufficient, hypnogogic images or hallucinations, and hypnic jerks also known as vivid visual events, loss of sleep has many symptoms general discomfort, Suprachiasmatic Nucleus (SCN) defined as the internal clock that tells people when to wake up and when to fall asleep