Your psychology instructor states that during a night of sleep, a person goes through cycles of light and deep sleep, while also experiencing bodily changes. Using a description of the stages of NREM and REM, describe a night of sleep, including the type of brain waves present and the characteristics of each NREM stage and the characteristics of REM sleep

What will be an ideal response?


Answer will include that the two most basic states of sleep are non-REM (NREM) sleep, which occurs during Stages 1, 2, 3, and 4, and REM sleep, with its associated dreaming. NREM sleep is dream free about 90 percent of the time and is deepest early in the night during the first few Stage 4 periods. Your first period of Stage 1 sleep also usually lacks REMs and dreams. Later Stage 1 periods typically include a shift into REM sleep. As you begin the process of going to sleep, your eyes close, breathing becomes slow and regular, the pulse rate slows, and body temperature drops. Soon after, the four separate NREM sleep stages occur. NREM Stage 1: As you enter light sleep, your heart rate slows even more. Breathing becomes more irregular. The muscles of your body relax. This may trigger a reflex muscle twitch called a hypnic jerk. In Stage 1 sleep the EEG is made up mainly of small, irregular waves with some alpha. Persons awakened at this time may or may not say they were asleep. NREM Stage 2: As sleep deepens, body temperature drops further. Also, the EEG begins to include sleep spindles, which are short bursts of distinctive brain-wave activity. Spindles seem to mark the true boundary of sleep. Within four minutes after spindles appear, most people will say they were asleep. NREM Stage 3: In Stage 3, a new brain wave called delta begins to appear. Delta waves are very large and slow. They signal a move to deeper sleep and a further loss of consciousness. NREM Stage 4: Most people reach deep sleep in about an hour. Stage 4 brain waves are almost pure delta and the sleeper is in a state of oblivion. If awakened in this stage, the sleeper will wake up in a state of confusion and may not remember what awakened them. Fluctuations in sleep hormones cause recurring cycles of deeper and lighter sleep throughout the night. During these repeated periods of lighter sleep, the sleeper's eyes occasionally move under the eyelids. Rapid eye movements (REMs) are associated with dreaming. In addition, REM sleep is marked by a return of fast, irregular EEG patterns similar to Stage 1 sleep. In fact, the brain is so active during REM sleep that it looks as if the person is awake. REM sleep

Psychology

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People pass through a transition stage when entering late adulthood. What do they realize during this period?

A. They have untapped vitality. B. They are finally old. C. Their decision making has been incompetent. D. Life is meaningless.

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Murat asks his older brother for advice about his first date. His brother tells him that he should first call the woman to ask her out. Then, on the day of their date, he should pick her up and give her a rose. Then he should drive her to a nice restaurant and pay for dinner. Finally, when he takes her home, he should wait until she gets inside before leaving. Murat's brother has provided a ____

of a first date.? a. ?script b. ?formal concept c. ?mental model d. ?natural concept

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Evidence supports the notion that observation of media violence

A) does not lead to subsequent aggression later in life. B) is related to higher levels of depression by age 30. C) is related to higher levels of anxiety by age 30. D) can lead to a greater readiness to act aggressively, bullying, and an insensitivity to the suffering of victims of violence.

Psychology

The cells or circuits responsible for facial recognition:

a. Reflect hard wiring from natural selection b. Are found in the fusiform face area c. Show some changes in response due to learning d. All of the above

Psychology