Neuroscience Tutorial Quiz

If Roger Sperry flashed a picture of an object into the RIGHT visual field of a patient who had a callosotomy (split brain surgery), what would the patient be UNABLE to do?

In what part of the brain can you find the neurons that are responsible for satiety and cessation of eating at the end of the meal?

Patient MQ had suffered a stroke to part of her left frontal lobe. What deficits might she suffer?

During an action potential...

What would happen if there were no gaps between the segments of myelin?

Which functional brain mapping methods have good spatial but poor temporal resolution?

Which of the following is NOT true of the Central Nervous System?

After recovering from a severe viral illness that affected hos brain, patient AB has been left suffering a profound anterograde amnesia. What part of his brain might have been damaged during the illness?

Where would one expect to find the most neurons?

An antagonist is a drug that can ....

Split Brain

Patients with a severed corpus callosum (split brain) are unable to verbally describe objects presented to their right visual field because the information is processed in the left hemisphere, which is also responsible for language.

Satiety and Eating

The ventromedial hypothalamus (VMH) contains neurons responsible for satiety and the cessation of eating.

Left Frontal Lobe Stroke

Patient MQ may experience deficits in language production (Broca's aphasia), motor control on the right side of her body, planning, and executive function.

Action Potentials

During an action potential, the influx of sodium ions depolarizes the membrane, triggering the opening of potassium channels and leading to repolarization.
If there were no gaps between myelin segments (nodes of Ranvier), the action potential would not be able to regenerate and would eventually die out, preventing the signal from traveling down the axon.

Brain Mapping Methods

Structural imaging methods like MRI and CT have good spatial resolution but poor temporal resolution. They provide detailed structural information but cannot capture dynamic brain activity.

Central Nervous System

The central nervous system (CNS) is comprised of the brain and spinal cord and is responsible for processing information and coordinating bodily functions.
The CNS is NOT directly responsible for voluntary movement; that function is controlled by the peripheral nervous system.

Anterograde Amnesia

Patient AB's anterograde amnesia suggests damage to the hippocampus, a structure critical for forming new memories.

Neuron Distribution

The cerebral cortex, the outermost layer of the brain, is the location with the densest concentration of neurons.

Antagonists

An antagonist is a drug that binds to a receptor and prevents the natural neurotransmitter from binding, blocking its action.

Test your knowledge on the effects of split brain surgery, particularly in relation to visual processing. This quiz will explore what a patient after a callosotomy cannot do when presented with stimuli in the right visual field.