Question 1

Which of the following statements about dreaming is FALSE?

Accepted Answer

Research suggests that most of our nighttime dreams are not frightening and do not necessarily indicate early warning signs of depression or anxiety. Dreams can range from mundane experiences to highly vivid and imaginative scenarios.

Question 2

Most people who are deprived of all environmental time cues tend to naturally follow a _____-hour sleep-wake cycle.

Accepted Answer

Most people who are deprived of all environmental time cues tend to naturally follow a 24.2-hour sleep-wake cycle, which is slightly longer than the typical 24-hour day. This phenomenon is known as the circadian rhythm.

Question 3

According to _____, dreaming is the subjective awareness of the brain's internally generated signals during sleep.

Accepted Answer

The activation-synthesis model, developed by Hobson and McCarley, suggests that the brain generates random signals during sleep and the brain tries to make sense of them by synthesizing them into meaningful experiences, resulting in dreams. According to this model, dreams are not symbolic expressions of unconscious desires or conflicts (Freud's psychoanalytic theory) or the result of a divided consciousness (neodissociation model) or related to cognitive processes (social-cognitive theory).

Question 4

According to Focus on Neuroscience: The Addicted Brain, alcohol, heroin, nicotine, cocaine, and the amphetamines primarily affect the:

Accepted Answer

Alcohol, heroin, nicotine, cocaine, and amphetamines are known to activate the dopamine reward system in the brain, which is responsible for feelings of pleasure and reinforcement of addictive behavior.

Question 5

_____ cannot be produced through hypnosis.

Accepted Answer

Temporary moments of superhuman strength are not physically possible, even through hypnosis. Therefore, they cannot be produced through hypnosis. Temporary blindness or deafness, relief from pain, and loss of sensation in a specific body area are all possible through hypnosis.

Question 6

Which of the following is/are necessary in order to stay precisely synchronized, or entrained, to a 24-hour-day?

Accepted Answer

Exposure to environmental time signals, such as sunlight, is necessary in order to stay entrained to a 24-hour-day. Without these signals, our internal body clocks can become desynchronized from the external environment, leading to sleep disturbances and other health problems. Medication and naps are not necessary for entrainment, while long periods of darkness can actually disrupt entrainment.

Question 7

Mandy is 8 months old, her mother Jennie is 40 years old, and her grandmother Matilda is 70 years old. During a typical 24-hour period, who experiences the HIGHEST proportion of REM to NREM sleep?

Accepted Answer

Infants generally experience a higher proportion of REM sleep compared to adults and older adults, and Mandy is the only one who is currently an infant. Therefore, she would experience the highest proportion of REM to NREM sleep during a typical 24-hour period.

Question 8

Biological processes that systematically vary over a 24-hour cycle are called _____ and are regulated by a cluster of neurons called the _____.

Accepted Answer

Circadian rhythms are biological processes that follow a 24-hour cycle and are regulated by a cluster of neurons called the suprachiasmatic nucleus (SCN). The other options are incorrect as melatonin cluster and pineal gland are not responsible for regulating circadian rhythms, and brain waves are not a biological process that vary over a 24-hour cycle.

Question 9

Which of the following lists the CORRECT sequence of sleep stages during the first 90 minutes of sleep?

Accepted Answer

The correct sequence of sleep stages during the first 90 minutes of sleep is stage 1 NREM, stage 2 NREM, stage 3 NREM, stage 4 NREM, and finally REM sleep. This sequence is typically repeated several times throughout the night, with each cycle lasting approximately 90 minutes. Choice B is incorrect because REM sleep occurs after NREM sleep stages, and stage 4 NREM sleep is typically reached later in the night. Choice C is incorrect because there is no stage 1 REM, and stage 4 is typically the deepest stage of NREM sleep. Choice D is incorrect because it does not accurately describe the stages of sleep.

Question 10

Long-term abuse of methamphetamines contribute to the most difficulty in which area?

Accepted Answer

Long-term abuse of methamphetamines can lead to significant damage to the brain, particularly in areas related to memory and cognitive function. Methamphetamine use can cause structural and functional changes in the brain that can lead to deficits in memory, attention, and decision-making abilities. Other areas of the brain that may be affected by methamphetamine use include those involved in language and motor control, but these effects may not be as pronounced as those related to memory and cognitive function.

Question 11

According to Focus on Neuroscience: The Sleep-Deprived Emotional Brain, which of the following is TRUE?

Accepted Answer

The answer of According to Focus on Neuroscience: The Sleep-Deprived...

Question 12

Sleepwalking and sleep terrors are _____ that tend to occur during _____.

Accepted Answer

Sleepwalking and sleep terrors are classified as parasomnias, which are abnormal behaviors that occur during sleep. They tend to occur during stages 3 and 4 NREM sleep, also known as slow-wave sleep. Dyssomnias refer to abnormal sleep patterns or difficulties falling or staying asleep, which is not applicable to sleepwalking and sleep terrors.

Question 13

Which colors frequently appear in MOST people's dreams?

Accepted Answer

According to research, pastel colors such as yellow, green, blue, and pink are the most frequently occurring colors in dreams among the majority of people.

Question 14

According to the _____ theory of hypnosis, people who are hypnotized are not in any special state of consciousness but are simply highly motivated to respond to the demands of the hypnotist and the situation.

Accepted Answer

The social-cognitive theory of hypnosis suggests that people respond to hypnotic suggestions due to their beliefs, attitudes, and expectations about hypnosis and their own abilities, as well as social factors such as the authority and expectations of the hypnotist. This theory does not suggest that people enter into any special state of consciousness during hypnosis, but rather that they are highly motivated to respond in a way that they believe is expected of them.

Question 15

Techniques for focusing attention, which are found in most cultures and many religions, that induce an altered state of focused attention and heightened awareness are called:

Accepted Answer

The techniques mentioned in the question, which aim to induce an altered state of focused attention and heightened awareness, are commonly associated with meditation techniques. While there may be some overlap with hypnosis techniques in terms of inducing a trance-like state, the focus on attention and awareness suggests that meditation is a better fit for the question prompt.

Question 16

In a meditation training study where participants learned to meditate over the course of eight weeks, researchers found that:

Accepted Answer

The study found that new meditators showed gray-matter density increases in several cortical areas, indicating that meditation can lead to structural changes in the brain.

Question 17

The activation of the _____ area(s) in the brain reflect the emotional qualities of dreams.

Accepted Answer

The limbic system is responsible for regulating emotions and memories, so its activation during dreams is likely related to the emotional content of those dreams. The prefrontal cortex is involved in decision making and problem solving, but its activation during dreams may reflect the brain's attempt to make sense of dream content. There is limited evidence for language processing during dreaming, so choice C can be ruled out. The left hemisphere is typically associated with language and logical processing, but it is not specific to the emotional qualities of dreams, so choice D can also be ruled out.

Question 18

Sleep restriction studies have shown that:

Accepted Answer

Sleep restriction studies have consistently shown that restricting sleep to 4-6 hours per night over several nights results in decreased immune system functioning, reduced concentration and vigilance, slowed reaction time, impaired memory consolidation, and reduced ability to gauge risk. These effects typically accumulate over time, rather than adapt or disappear as the study progresses. While there may be some short-term benefits in terms of increased alertness or reaction time, these effects are typically overshadowed by the negative consequences of sleep restriction. Additionally, there is evidence to suggest that both REM and NREM sleep deprivation result in rebound effects, where the individual experiences increased REM and NREM sleep in subsequent nights to make up for lost sleep.

Question 19

_____, a famous American psychologist, described consciousness as being like a river or a stream.

Accepted Answer

William James is the psychologist who famously compared consciousness to a river or stream. He believed that consciousness is constantly changing and flowing, just like a river.

Question 20

Westerbrook did not notice when his wife, Priscilla, got her hair cut because he wasn't paying attention to her appearance when she walked into the house. Mr. Westerbrook's failure to notice that Priscilla cut her hair is most likely an example of:

Accepted Answer

Change blindness refers to the inability to detect changes in a stimulus that are easily noticeable when they occur side by side in time. In this case, Mr. Westerbrook failed to notice the change in his wife's appearance because he was not paying attention to it. This is an example of change blindness.

Quiz 4: Section 4: Consciousness and Its Variations