Unit 1 MC Exam

A research team lesioned the lateral hypothalamus of a rat and then monitored the rat’s activity when it recovered from the surgery. Their hypothesis is likely to be that the rat would do which of the following?

• Experience impaired short-term memory in learning a maze

• Form extreme fear responses to nonthreatening stimuli

• Show reduced eating behavior

• Display increased sociability toward other rats

The graph depicts the stages of sleep, including REM sleep and NREM sleep (Stages 1, 2, and 3). The data in the graph would most likely be obtained with which of the following instruments?

• Functional magnetic resonance imaging (fMRI)

• Electroencephalogram (EEG)

• Transcranial magnetic stimulation (TMS)

• Electroconvulsive therapy (ECT)

The graph depicts the stages of sleep, including REM and NREM (Stages 1, 2, and 3). For the person with the results shown in the graph, progressing across the x-axis, there is most likely to be an increase in which of the following?

• REM sleep behavior disorder

• Somnambulism

• Night terrors

• Dreaming

George was involved in an accident and experienced head trauma. Although his eyes were functioning normally, he was unable to see. Which area of the brain was most likely affected by the accident?

• Frontal lobe

• Parietal lobe

• Temporal lobe

• Occipital lobe

Which of the following characteristics is generally associated with the use of hallucinogens?

• The experience of vivid, distorted images that are not based on sensory input

• Decreased pain sensation and decreased anxiety

• Slower bodily functions

• The experience of brief euphoria followed by a depressive state

Damage to the cerebellum would most likely result in which of the following problems?

• Aphasia

• Increased aggression

• A loss of motor coordination

• A change in personality

Brain damage that leaves a person capable of understanding speech but with an impaired ability to produce speech most likely indicates injury to which of the following?

• The limbic system

• Wernicke’s area

• Broca’s area

• The occipital lobe

Rafael has a sleep disorder for which he takes medically prescribed amphetamines. For which of the following sleep disorders is Rafael most likely being treated?

• Sleep apnea

• Narcolepsy

• Insomnia

• Circadian rhythm sleep disorder

Jeff lives in the United States, and he recently flew to Spain. Even after sleeping for several hours on the flight, he still felt lethargic for a few days. If Jeff has not caught an illness, which of the following is the most likely explanation for his physical response?

• His circadian rhythm has been disrupted.

• His stages of sleep are out of order.

• His delta waves have lost significant amplitude.

• He is experiencing REM rebound.

A common psychological effect of alcohol intake is

• reduced inhibition

• anxiety

• psychosis

• heightened creativity