Question 1

Which lobe of the brain would be most active for a task that required a great deal of manual dexterity?

Accepted Answer

The answer of Which lobe of the brain would be...

Question 2

Which lobe of the brain would be most active for an auditory task?

Accepted Answer

The temporal lobe is primarily responsible for processing auditory information, making it the most active lobe during an auditory task.

Question 3

The next time you have an itch on your foot, where will the perception of the itch be processed?

Accepted Answer

The parietal lobe is responsible for processing sensory information such as touch, pressure, and temperature. When there is an itch on your foot, the sensory receptors in your skin send signals to the parietal lobe of the brain, which processes the sensation and allows us to feel the itch.

Question 4

If the human cortex did not have so many folds, which of the following would be likely?

Accepted Answer

The folds in the cortex increase surface area, allowing for greater connectivity and functionality in a smaller space. Without this increased surface area, the brain would need to be larger to maintain the same number of neurons and connections.

Question 5

When an object is placed unseen in the left hand of a person who has had split-brain surgery, which of the following will happen?

Accepted Answer

When an object is placed unseen in the left hand of a person who has had split-brain surgery, it will go to the right hemisphere where the language center is not located. Therefore, the person will not be able to describe it verbally.

Question 6

What is likely to be released if the pituitary gland is activated?

Accepted Answer

The pituitary gland is responsible for releasing hormones, including growth hormone, thyroid-stimulating hormone, and follicle-stimulating hormone, among others. Activation of the pituitary gland would result in an increased release of these hormones into the bloodstream.

Question 7

Which task is NOT predominantly controlled by the left hemisphere, for most people?

Accepted Answer

Spatial tasks, such as mental rotation of objects, are predominantly controlled by the right hemisphere of the brain for most people. Writing, language, and controlling the right side of the body are all predominantly controlled by the left hemisphere.

Question 8

John has recovered very well from a recent stroke, except that he can no longer understand the words people are saying to him even though he can hear perfectly well. Which of the following brain areas is likely damaged?

Accepted Answer

Wernicke's area is responsible for language comprehension. Damage to this area can result in receptive aphasia, where the individual is unable to understand spoken or written language, despite having intact hearing and vision. The other options listed are not primarily involved in language comprehension.

Question 9

If a patient has severe damage to the prefrontal cortex, which of the following would become difficult for that patient?

Accepted Answer

The prefrontal cortex is responsible for executive functions such as planning, attention, and organization. Severe damage to this area would make these tasks difficult for the patient. Identifying objects by touch, hearing sounds, and identifying visually complex materials are not primarily controlled by the prefrontal cortex, so they would not necessarily be affected by such damage.

Question 10

Which of the following areas allows information to travel between the left and right hemispheres?

Accepted Answer

The corpus callosum is a bundle of nerve fibers that connects the left and right hemispheres of the brain, allowing them to communicate and share information. The thalamus is a sensory relay center, the pons is involved in sleep and arousal, and the limbic system is involved in emotion and memory, but none of these structures directly facilitate communication between the hemispheres.

Question 11

Ellie has had split-brain surgery. If she briefly views "boatXhouse" while focusing on the X, what would Ellie say that she saw?

Accepted Answer

The answer of Ellie has had split-brain surgery. If she...

Question 12

Which task would NOT be primarily controlled by the right hemisphere?

Accepted Answer

Reading is primarily controlled by the left hemisphere of the brain.

Question 13

Which lobe of the brain would be most active for a visual task?

Accepted Answer

The occipital lobe is responsible for processing vision and is the primary visual processing area of the brain. Therefore, it would be most active during a visual task.

Question 14

Following split-brain surgery, if an individual has difficulty naming an object that he briefly saw, which visual field would you expect that the object was presented to?

Accepted Answer

Following split-brain surgery, if an individual has difficulty naming an object, it suggests that the object was presented to the left visual field. This is because the left visual field is processed by the right hemisphere, which is typically not dominant for language in most people. Language functions are primarily located in the left hemisphere, which receives visual information from the right visual field. Thus, when an object is presented to the left visual field, the right hemisphere processes it, but cannot easily communicate with the language centers in the left hemisphere due to the severed corpus callosum, leading to difficulties in naming the object.

Question 15

Theodore was born blind. What is likely to happen to the visual cortex of Theodore's brain as he develops?

Accepted Answer

When one sensory modality is lacking, the brain may allocate the unused neural resources to other modalities, such as auditory processing in this case. Therefore, it is likely that Theodore's visual cortex will be recruited for processing auditory information.

Question 16

Which lobe of the brain would be most active for a task that required you to identify objects by touch?

Accepted Answer

The parietal lobe is responsible for processing sensory information such as touch, so it would be the most active for a task that required identifying objects by touch.

Question 17

If the occipital lobe of the brain is stimulated, what would a person be most likely to report?

Accepted Answer

The occipital lobe is responsible for processing visual information, so if it is stimulated, the person would be most likely to report seeing a flash of light.

Question 18

An elderly person has a stroke that leaves her unable to talk and part of her body paralyzed. Which part of the body is most likely paralyzed?

Accepted Answer

The answer of An elderly person has a stroke that...

Question 19

How could you determine whether a person has had split-brain surgery?

Accepted Answer

Split-brain surgery involves cutting the corpus callosum, which is the main pathway connecting the two hemispheres of the brain. This typically results in the left and right hemispheres becoming functionally separate. Therefore, a person who has had split-brain surgery may have difficulty integrating information between the two hemispheres. One way to assess this is through visual identification tasks in a laboratory, where different stimuli can be presented to each hemisphere separately. If a person has had split-brain surgery, they may have difficulty identifying stimuli presented to one hemisphere when asked to verbally respond using the other hemisphere. Therefore, performance on visual identification tasks can be a good indicator of whether a person has had split-brain surgery.

Question 20

Where, in most people, is the area of the brain that is primarily responsible for speech production?

Accepted Answer

The area of the brain that is primarily responsible for speech production is located in the left frontal lobe for most people. This area is called Broca's area and is responsible for the motor planning and execution of speech.

Quiz 3: B: The Biological Bases of Behaviour