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stream, the interplay of the four features of being private, changing, continuous, and selective give us what is called a stream of consciousness or that experience we have of having continuous changing experiences which flow naturally into each other but remain ours alone." Consciousness and Brain Waves psychologist measure consciousness by studying brain waves - Electroencephalograph (EEG) - This is a machine that measures the electrical output of the brain using sensors attached to the skull Four Primary Bands of Brain Waves Beta Waves Alpha Waves - Theta Waves - Delta Waves Beta Waves: beta waves indicate alertness; this is the brain wave you have if you were actively engaged in an activity or event; The waves are short and rapid Alpha Waves: alpha waves indicate relaxation; The waves begin to slow down and spread out Theta Waves: Theta waves indicate light sleep; we are conscious during sleep; we are aware of stimuli just at a much higher threshold so it takes more to get our attention Delta Waves: delta waves indicate deep sleep; these are the least active and slowest of the brain waves; only enter delta waves briefly during sleep compared to the time we spend in theta waves Scientific observation is supposed to be objective, but our conscious experience is typically subjective Section 2 1 Sigmund Frued → Sigmund Freud was a physician, psychiatrist, and psychologist; He created his own way of seeing and treating those with mental disorders, which she called psychoanalysis. He tried to cure people of disturbing and abnormal behavior. In doing so Freud created one of the enduring insights into the nature of consciousness Freud's Three Levels of Consciousness: conscious level, preconscious level, and unconscious level Conscious level: the conscious level is a level of consciousness at which a person perceives thoughts and feelings; it's what we're aware of right now Preconscious level: the level of consciousness from which a person can recall memories or stored knowledge; quickly recalled when needed Unconscious Level: The level of consciousness that contains repressed desires, wants, and impulses of which a person is unaware According to Freud, the unconscious controls much of your conscious behavior, whether you are aware of it or not The unconscious contains things like past traumas, hidden hostilities, and desires you may not be proud of. If you say the reason you're not aware of these things is that your brain is actively repressing these thoughts - sometimes we have issues that may arise from our compulsions that are caused by these unconscious desires. Freud's Concept of Consciousness Freud believed that all levels of consciousness played a role in influencing our personality and behavior Two added levels Nonconscious: automatic body processes that function without conscious thought, like breathing or sweating; sometimes they can rise to the level of consciousness. 2 Subconscious: level of consciousness that picks up external signals that the conscience mind does not notice; sometimes is called the unconscious but is not the same. Subconsciousness is the level of consciousness that picks external signals our conscious mind is not notice. My retainer oppression of an address he briefly meaning us to want to buy that product later on