Question 1

Professor Seif conducts research on the relationship between limbic system functioning and sexual urges. Her research focus is most characteristic of someone working from the ________ perspective.

Accepted Answer

Professor Seif's research focuses on the functioning of the limbic system, which is primarily a biological component of the brain associated with emotion and motivation. This suggests that she is taking a biological perspective in her research.

Question 2

Paralysis triggered by botulin poisoning is most likely to be relieved by a(n)

Accepted Answer

Botulin poisoning results in reduced release of acetylcholine (ACh), which is necessary for muscle contraction. Therefore, an ACh agonist can counteract the effects of botulin poisoning and relieve paralysis. Serotonin agonists and antagonists would not be effective in this context as they do not directly affect ACh release or receptor activity. ACh antagonists would exacerbate the paralysis as they would further reduce ACh activity. Botulin toxin blocks the release of acetylcholine (ACh), a neurotransmitter that triggers muscle contractions. Therefore, the paralysis caused by botulin poisoning can be relieved by administering an ACh agonist, which stimulates the release of ACh and counteracts the toxin's effects. Serotonin agonists and antagonists are not likely to be effective in this scenario. An ACh antagonist would exacerbate the problem, as it would further reduce ACh levels and exacerbate the paralysis.

Question 3

People who can hear usually process their speaking with the ________ hemisphere. Deaf people usually process their language signing with the ________ hemisphere.

Accepted Answer

The answer of People who can hear usually process their...

Question 4

Plasticity refers to the brain's capacity to

Accepted Answer

Plasticity refers to the brain's ability to change and adapt through the formation of new neural connections, which is also known as neuroplasticity. This can occur in response to learning, experience, injury, and development. Plasticity plays an important role in neural development, recovery from brain injury, and the acquisition of new skills and knowledge. Options A, B, and D do not relate to plasticity but rather to other functions of the brain. Plasticity refers to the brain's ability to change and adapt by building new neural pathways in response to experiences and learning. It is not related to automatic regulation of bodily functions (choice A), generating consciousness (choice B), or transmitting information between hemispheres (choice D).

Question 5

Stimulation of the reticular formation will cause a

Accepted Answer

The reticular formation plays a role in regulating arousal and wakefulness. Stimulation of the reticular formation can activate the brain and cause a sleeping cat to awaken. Stimulation of the reticular formation in the brainstem is responsible for maintaining arousal and attention. Therefore, stimulating the reticular formation will cause a sleeping cat to awaken.

Question 6

Research on left-handedness indicates that

Accepted Answer

Research has shown that left-handers are more likely than right-handers to have a more equal distribution of language processing between the two hemispheres of the brain. This means that left-handers may not necessarily process speech primarily in their left hemisphere, unlike most right-handers. A, B, and D are incorrect as research has not shown any significant gender differences in left-handedness, the size of the corpus callosum is dependent on several factors and not strongly related to handedness, and there is no conclusive evidence that left-handers are generally less competent in mathematics.

Question 7

Neurotransmitters are chemical messengers that travel across the

Accepted Answer

Neurotransmitters travel across the synaptic gap, which is the small space between the axon terminal of one neuron and the dendrites of another neuron. They cannot travel across the cell body, myelin sheath, or threshold. Neurotransmitters travel across the synaptic gap, which is the small space between two neurons where they communicate with each other. The other options are not accurate descriptions of the pathway of neurotransmitters.

Question 8

Neurotransmitters bind to receptor sites and influence the flow of ________ into receiving neurons.

Accepted Answer

Neurotransmitters influence the flow of ions, such as sodium or potassium, into receiving neurons. This influx of ions can change the electrical charge of the receiving neuron, potentially leading to the initiation of an action potential. Neurotransmitters bind to receptor sites on the postsynaptic neuron and cause ion channels to open, allowing ions to flow in and out of the neuron. This can either activate or inhibit the neuron, leading to neurotransmission.

Question 9

Suppose that a speech synthesizer could produce specific words when signaled by the brain activation patterns involved when a person merely thinks about these words. This would be an illustration of

Accepted Answer

This scenario describes the development and use of cognitive neural prosthetics, which utilize brain signals to control external devices such as speech synthesizers. Constraint-induced therapy involves restricting the use of a functioning limb to encourage the use of an impaired one, while positron emission tomography is a neuroimaging technique that detects brain activity. Neurogenesis refers to the formation of new neurons in the brain.

Question 10

Some researchers believe that addictive disorders such as alcohol dependence may be linked to

Accepted Answer

Some researchers believe that addictive disorders such as alcohol dependence may be linked to a reward deficiency syndrome, meaning that individuals with addictive disorders may have a reduced function in the brain's reward system. This can result in a diminished response to natural rewards and a need for increased stimulation, such as the consumption of alcohol or drugs, to achieve a pleasurable effect.

Question 11

People can simultaneously process many aspects of sensory information such as color, shape, and size. This best illustrates the functioning of multiple

Accepted Answer

Neural networks are interconnected groups of neurons that work together to process and integrate sensory input. The ability to simultaneously process multiple aspects of sensory information is attributed to the parallel processing abilities of neural networks.

Question 12

Sheelah was able to jerk her hand out of the scalding water before sensing any pain because this withdrawal reflex

Accepted Answer

The withdrawal reflex, which is an automatic response to remove oneself from pain or harm, is activated by interneurons in the spinal cord. This reflex does not involve conscious thought or decision-making and occurs before the brain is even aware of the pain or stimulus. The withdrawal reflex is responsible for Sheelah's ability to quickly remove her hand from the scalding water before sensing any pain. This reflex is mediated by interneurons in the spinal cord that send signals to the muscles in Sheelah's hand, causing it to rapidly withdraw. Therefore, choice A - "was activated by interneurons in her spinal cord" - is the best choice. The other choices are incorrect because the withdrawal reflex does involve activity within the central nervous system (in the spinal cord) and is not mediated by the reticular formation or autonomic nervous system.

Question 13

Recording electrodes are placed directly on the scalp to produce a(n)

Accepted Answer

Recording electrodes are typically used to measure electrical activity in the brain, which is what an electroencephalogram (EEG) measures. PET scans, MRI, and fMRI all involve different methods of imaging the brain rather than measuring its electrical activity directly. Recording electrodes placed directly on the scalp are used to produce an electroencephalogram (EEG). PET scans, MRI, and fMRI all involve different types of imaging techniques that do not use scalp electrodes.

Question 14

Psychologists who work from the biological perspective are most likely to focus on the links between

Accepted Answer

Psychologists who work from the biological perspective are most likely to focus on the links between physiological activity (such as brain function and hormonal activity) and psychological events (such as thoughts, emotions, and behaviors). While genes and neurotransmitters are relevant to this perspective, they are only a part of the larger focus on the relationship between biology and behavior. Similarly, sensory and motor neurons and the CNS and PNS are both important components of the nervous system, but they do not necessarily encompass the full scope of the biological perspective. Psychologists who work from the biological perspective are interested in understanding the physiological basis of behavior and mental processes. Therefore, they are most likely to focus on the links between physiological activity (such as brain activity, hormones, and nervous system function) and psychological events (such as thoughts, emotions, and behaviors).

Question 15

Teaching a patient to regain use of an impaired limb by limiting his or her use of the good limb is called

Accepted Answer

The technique described in the question is known as constraint-induced therapy, which involves restricting the use of the uninjured limb to encourage the use of the impaired limb. None of the other options (functional magnetic resonance imaging, cognitive neural prosthetics, phrenology) are related to this rehabilitation technique.

Question 16

Split-brain patients have had their ________ surgically cut.

Accepted Answer

Split-brain patients have had their corpus callosum surgically cut, thus separating the two hemispheres of their brain and preventing communication between them.

Question 17

One stroke patient was put to work cleaning tables, with his good arm and hand restrained. Slowly, the bad arm recovered its skills. He gradually learned to write again and even to play tennis. This best illustrates the value of

Accepted Answer

The scenario described in the question highlights the concept of plasticity, which refers to the brain's ability to adapt and reorganize itself in response to changing environmental demands. The stroke patient's recovery of skills in his bad arm demonstrates the brain's ability to rewire neural connections and compensate for the damage caused by the stroke. The other choices (hemispherectomy, reward deficiency syndrome, cognitive neural prosthetics) are not directly related to the scenario or the concept being tested.

Question 18

Rats willingly crossed an electrified floor to electrically stimulate areas in their

Accepted Answer

The hypothalamus is involved in regulating a variety of motivated behaviors, including those related to pleasure and reward. The rats' willingness to cross an electrified floor to receive electrical stimulation suggests that the stimulation was pleasurable or rewarding for them, which is consistent with the involvement of the hypothalamus.

Question 19

Seizures are likely to be associated with an

Accepted Answer

Seizures are usually associated with an imbalance between excitatory neurotransmitters like glutamate and inhibitory neurotransmitters like GABA. Specifically, an undersupply of GABA and an oversupply of glutamate can lead to seizures. GABA is an inhibitory neurotransmitter that helps to calm neural activity, while glutamate is an excitatory neurotransmitter that increases neural activity. When there is an imbalance between these two neurotransmitters, it can lead to excessive, uncontrolled firing of neurons, resulting in a seizure. GABA is an inhibitory neurotransmitter that helps to regulate brain activity, while glutamate is an excitatory neurotransmitter that stimulates brain activity. An undersupply of GABA and an oversupply of glutamate would lead to increased excitability in the brain, which can trigger seizures.

Question 20

Signal reception is to ________ as signal transmission is to ________.

Accepted Answer

Signal reception is the process of receiving information or stimuli from the environment, which is similar to how dendrites receive signals from other neurons. Signal transmission, on the other hand, involves the transfer of information from one neuron to another, which is similar to how axons transmit signals to other neurons or muscles. The other choices do not accurately reflect the relationship between signal reception and transmission. Signal reception is like dendrites receiving messages from other neurons, and signal transmission is like axons transmitting these messages to other neurons.

Quiz 2: Neuroscience and Behavior