Question

60 minutes - sleep
name

1. approximately what percentage of our lives do we spend asleep?

a 25%
b 33%
c 10%
d. the percentage differs dramatically by person.

1. why does this cal scientist say sleep is an evolutionary risk we take, so sleeping must be worth it?

a. when we sleep, we put ourselves in some danger because we are less prepared to guard against attacks, predators, etc.
b. when we sleep, we are not taking the time to eat and gain nutrients.
c. when we sleep, we lose productivity time.

1. according to research on sleep and academic performance, which statement is generally true?

a. youll perform better on an exam if you get a good nights sleep rather than staying awake and studying more.
b. of course, the more you study, the better youll do on the exam, even if that means pulling an \all - nighter\ (no sleep) the night before the exam.
c. your performance on an exam depends on how much sleep you usually need versus how much study time you put in.

1. according to the study of the college students who were kept awake for 35 hours and then shown violent, upsetting images, which is true about their response in the amygdala, a primitive part of the brain associated with processing emotions and decision - making?

a. an mri indicated the sleep - deprived subjects had a modest emotional response to the negative images because they were too tired to care.
b. an mri indicated that the sleep - deprived subjects had a hyperactive response to the negative images than the subjects who had enough sleep.

1. what medical effect can chronic lack of sleep have on our bodies?

a. heart disease
b. obesity
c. diabetes
d. high blood pressure
e. all of the above

Explanation:

1. On average, humans spend about one - third (33%) of their lives asleep.
2. When sleeping, we are less alert to potential threats (like attacks from predators in an evolutionary sense), so it's a risk. But since we still do it, it must have significant benefits.
3. Research shows that getting a good night's sleep enhances cognitive function and performance on exams more than pulling an all - nighter.
4. Sleep - deprived individuals often show hyperactive amygdala responses to negative stimuli compared to well - slept individuals.
5. Chronic lack of sleep has been linked to heart disease, obesity, diabetes, and high blood pressure.

Answer:

1. B. 33%
2. A. When we sleep, we put ourselves in some danger because we are less prepared to guard against attacks, predators, etc.
3. A. You’ll perform better on an exam if you get a good night’s sleep rather than staying awake and studying more.
4. B. An MRI indicated that the sleep - deprived subjects had a hyperactive response to the negative images than the subjects who had enough sleep.
5. E. All of the above