Question 1

Which of the following is true of the neurotransmitter serotonin?

Accepted Answer

Serotonin is involved in the regulation of mood and attention. It has been linked to various psychiatric disorders including depression, anxiety, obsessive-compulsive disorder (OCD), and bipolar disorder. It also plays a role in sleep-wake cycles, appetite, and aggression. Its deficiency is not responsible for Parkinson disease, and its excess is not responsible for depression.

Question 2

The release of which of the following hormones and neurotransmitters plays an important role in the experience of love and social bonding?

Accepted Answer

Oxytocin is often referred to as the "cuddle hormone" as it is released during activities such as hugging and kissing, and plays a crucial role in social bonding, trust, and love. While dopamine is associated with pleasure and reward, it primarily plays a role in the early stages of romantic attraction rather than long-term bonding. Acetylcholine and serotonin are important neurotransmitters for other functions such as memory and mood regulation.

Question 3

Which brain imaging technique allows scientists to draw causal inferences between variables?

Accepted Answer

Transcranial magnetic stimulation (TMS) allows scientists to temporarily disrupt or enhance brain activity in a specific area, thus allowing for causal inferences to be drawn between brain function and behavior. PET scans and fMRI can show correlations between brain activity and behavior, but cannot establish causation. CAT scans are useful for visualizing brain structure, but cannot show brain function.

Question 4

A(n)_____ records the brain's electrical activity by placing electrodes on the scalp.

Accepted Answer

Electroencephalograph (EEG) records the brain's electrical activity by placing electrodes on the scalp. Echocardiogram (ECG) records the electrical activity of the heart, computerized axial tomography (CAT scan) uses X-rays to create detailed images of the body's internal structures, and positron-emission tomography (PET scan) is a nuclear medicine imaging technique that produces 3D images of the body's functional processes.

Question 5

Which of the following best describes the function of endorphins?

Accepted Answer

Endorphins are neurotransmitters that are released in response to pain or stress and act as natural painkillers. They bind to the same receptors as opioids, such as morphine, and produce feelings of pleasure and euphoria. Endorphins are also involved in regulating appetite, reducing anxiety and depression, and enhancing the immune system.

Question 6

Which of the following principles underlies the technique of functional magnetic resonance imaging (fMRI)?

Accepted Answer

Functional magnetic resonance imaging (fMRI) works based on the principle that mental activity is associated with changes in the oxygenated blood levels in the brain. When a certain area of the brain is active, it requires more oxygen to meet the energy demands, which leads to an increase in the blood flow and oxygenation in that region. fMRI measures this change in blood flow and oxygen levels to create an image of brain activity.

Question 7

In the context of the organization of the brain,which part of the hindbrain regulates vital functions such as breathing and heart rate?

Accepted Answer

The medulla oblongata, located in the hindbrain region, is responsible for regulating vital functions such as breathing, heart rate, and blood pressure. The hypothalamus, located in the forebrain, controls homeostasis and certain autonomic functions, but not specifically breathing and heart rate. The midbrain and pons also play important roles in regulating various bodily functions, but not as specifically related to breathing and heart rate as the medulla oblongata.

Question 8

Dominic is a marathon runner.He admits that whenever he runs,he feels euphoric.He cannot begin his day without running for an hour.In the context of neurotransmitters,which of the following is most likely responsible for his feelings of pleasure from running?

Accepted Answer

Endorphins are neurotransmitters that are released during physical activity and can produce feelings of pleasure, also known as a "runner's high." The other options mentioned do not correspond with the effects of running on neurotransmitters.

Question 9

Which of the following is a significance of the brain lesioning process?

Accepted Answer

The brain lesioning process involves intentionally damaging specific regions of the brain to assess their function. By determining the effects of the damage on behavior and cognitive processes, researchers can gain insight into the functions of those particular brain regions. Options A, B, and D are incorrect as they describe different techniques or methods unrelated to brain lesioning.

Question 10

Based on the provocative research that has linked oxytocin to stress,if Julia finds herself in a stressful situation she is most likely to:

Accepted Answer

Based on the research linking oxytocin to stress, seeking support from a friend is a helpful strategy to regulate the stress response. Oxytocin has been found to promote social bonding and seeking support from a friend may trigger the release of oxytocin, which can help reduce feelings of stress and anxiety. Running away from the situation may increase feelings of stress and anxiety, while reacting as if nothing is wrong may lead to suppression of emotions and potential long-term negative consequences. Staying and confronting the stressor may be helpful in some situations but may also increase feelings of stress and anxiety. Seeking support from a friend is the most beneficial choice based on the research.

Question 11

Which of the following is true of the brain imaging technique known as transcranial magnetic stimulation (TMS)?

Accepted Answer

TMS can be used to study neuronal functioning after brain injuries by temporarily disrupting normal brain activity, allowing researchers to infer cause and effect relationships.

Question 12

Judith has been asked to visit a well-known neurologist in her town,who will examine the levels of glucose in Judith's brain.Which of the following techniques will the neurologist most likely use to conduct the examination?

Accepted Answer

Out of the given options, the most likely technique that the neurologist would use to examine the levels of glucose in Judith's brain is a PET scan. A PET scan can detect the metabolic activity in the brain by using a radioactive tracer that is injected into the bloodstream. The tracer binds to glucose, and the PET scanner produces images that show the distribution of the tracer in the brain. This can help the neurologist identify any areas of low glucose metabolism, which could indicate potential neurological problems. The other options, such as CAT scan or MRI, can provide structural information about the brain but do not directly measure glucose levels. TMS can be used to stimulate or inhibit specific areas of the brain but is not typically used to measure glucose levels.

Question 13

Michael,a researcher in the field of neuroscience,has a theory about a specific area of the brain causing difficulties in face recognition.To draw a solid causal inference,he intends to test his hypothesis on dogs by disrupting regions of their brains and examining the effects of this disruption on the dogs' face-recognition capacity.Which of the following techniques should be used by Michael to achieve his purpose?

Accepted Answer

To disrupt specific regions of the brain, Michael should use transcranial magnetic stimulation (TMS). This technique uses a magnetic coil to generate an electrical current that can temporarily disrupt or enhance activity in a targeted area of the brain. Computerized axial tomography (CAT scan) and magnetic resonance imaging (MRI) are imaging techniques that provide detailed structural information about the brain but are not used to manipulate brain activity. Functional magnetic resonance imaging (fMRI) is a technique that measures changes in blood flow associated with neural activity and is not used to disrupt brain activity.

Question 14

Harry has been diagnosed with epilepsy by his neurologist,Dr.Craig.Which of the following should Dr.Craig use to assess Harry's epilepsy by studying his brain-wave activity?

Accepted Answer

Electroencephalography (EEG) is a non-invasive procedure that records the electrical activity of the brain using electrodes placed on the scalp. It is the most appropriate choice for assessing Harry's epilepsy by studying his brain-wave activity. Electrooculography (EOG) measures eye movements, electromyography (EMG) measures muscle activity, and electrocardiography (ECG) measures heart activity, but none of these are directly related to epilepsy or brain-wave activity.

Question 15

Sasha,a researcher,is working on a project on the human brain.Part of her research requires her to place electrodes on the scalps of her subjects to study their brain-wave activity.In this scenario,Sasha is most likely using _____.

Accepted Answer

Sasha is studying brain-wave activity by placing electrodes on the scalp of her subjects which is most likely an electroencephalograph (EEG).

Question 16

Which of the following neurotransmitters is released in excess during the onset of lactation and breastfeeding in mothers who have just given birth?

Accepted Answer

Oxytocin is released in excess during the onset of lactation and breastfeeding in mothers who have just given birth. Oxytocin stimulates the muscles in the breasts to help push milk into the milk ducts, making it available for the baby to feed on.

Question 17

Magnetic resonance imaging (MRI)is a technique that:

Accepted Answer

MRI is a technique that uses a strong magnetic field and radio waves to construct detailed images of a person's tissues and biochemical activities. It is often used in medical diagnosis to identify abnormalities in the brain and other parts of the body. MRI does not measure the rate at which brain cells use glucose, nor does it transduce the electrical activity of individual neurons. X rays do not construct three-dimensional images, although they can be used to produce two-dimensional images.

Question 18

In which of the following ways does functional magnetic resonance imaging (fMRI)detect the functioning of the brain?

Accepted Answer

fMRI detects the functioning of the brain by exploiting changes in blood oxygen that occur in association with brain activity. When a specific area of the brain becomes active, it requires more oxygen and blood flow, leading to an increase in the concentration of oxygenated hemoglobin in that area. This increase can be detected using fMRI.

Question 19

Meredith suspects that her mother is suffering from dementia.However,Joy,the psychiatrist,asks her to visit the neurologist to get an X ray of her mother's brain to confirm this diagnosis.Which of the following brain imaging techniques will the neurologist most likely use to get the X ray?

Accepted Answer

Computerized axial tomography (CAT scan) is a type of X-ray imaging that produces detailed images of the brain. It is commonly used in diagnosing dementia and other brain disorders. Transcranial magnetic stimulation (TMS) is a non-invasive brain stimulation technique used to treat depression and other mental health conditions. Positron-emission tomography (PET scan) and magnetic resonance imaging (MRI) are also used for brain imaging, but they are less commonly used to diagnose dementia.

Question 20

Adrian,a neurologist,is examining the brain activity of children with attention deficit hyperactivity disorder.He observes images of their brains while they are performing a reading task and then again when they are not engaged in the activity.He compares these readings.Although he establishes a relationship between the two variables,he is not able to establish that one variable causes the other.Which of the following brain imaging techniques is he most likely to have used for his study?

Accepted Answer

fMRI is a brain imaging technique that measures changes in blood flow in the brain to different areas during a task or activity. It can show which areas of the brain are activated during a certain task and can compare brain activity during different tasks or resting states. However, it does not directly establish causation between variables. This is the most likely technique used by Adrian to examine brain activity in children with attention deficit hyperactivity disorder during a reading task and at rest.

Quiz 3: Biological Foundations of Behavior