Brain Structure

Brainstem

Controls automatic survival functions such as breathing, heart rate, and arousal.

Brainstem Location

Located at the base of the brain and connects the brain to the spinal cord.

Brainstem Scenario

A person can no longer automatically regulate essential functions such as breathing; which major brain region is likely involved?

Medulla

Regulates involuntary functions including breathing, heart rate, and blood pressure.

Medulla Location

Located in the lower portion of the brainstem, just above the spinal cord.

Medulla Scenario

A person experiences problems controlling their heartbeat and breathing after brain damage. Which structure may be affected?

Reticular Formation

A network involved in arousal, alertness, attention, and sleep-wake transitions.

Reticular Formation Location

Runs through the brainstem and extends into areas of the forebrain.

Reticular Formation Scenario

A person becomes unusually difficult to awaken after damage to a brainstem network involved in alertness. What structure is associated with this function?

Reticular Activating System (RAS)

The system that helps maintain wakefulness and directs attention toward important sensory information.

Cerebellum

Coordinates voluntary movement, balance, posture, and motor learning.

Cerebellum Location

Located at the back of the brain, behind the brainstem and below the occipital lobes.

Cerebellum Scenario

A person has trouble maintaining balance and coordinating precise movements after brain damage. Which structure is likely involved?

Cerebral Cortex

The outer layer of the cerebrum responsible for many complex cognitive and perceptual processes.

Cerebral Cortex Location

Forms the outermost layer of the brain and is divided into left and right hemispheres.

Cerebral Cortex Scenario

A task requires complex reasoning, perception, language, and conscious decision-making. Which major brain region is most involved?

Cerebral Hemispheres

The two major divisions of the cerebrum that specialize in some functions while communicating with each other.

Left Hemisphere

Generally more specialized for language and analytical processing, although most functions involve both hemispheres.

Right Hemisphere

Generally more specialized for spatial processing and some aspects of visual and emotional information, although most functions involve both hemispheres.

Corpus Callosum

Allows information to be exchanged between the left and right cerebral hemispheres.

Corpus Callosum Location

A large bundle of neural fibers located between the two cerebral hemispheres.

Corpus Callosum Scenario

A person has difficulty sharing information between the two sides of the brain after the connecting fibers are severed. Which structure was damaged?

Limbic System

A group of interconnected structures involved in emotion, motivation, memory, and other related processes.

Limbic System Location

Located deep within the brain, surrounding parts of the thalamus and brainstem.

Thalamus

Relays most incoming sensory information to the appropriate areas of the cerebral cortex.

Thalamus Location

Located near the center of the brain, above the brainstem.

Thalamus Scenario

A signal from the eyes reaches a central relay structure before being sent to the visual cortex. Which structure is involved?

Hypothalamus

Helps maintain homeostasis and regulates hunger, thirst, body temperature, and other motivated behaviors.

Hypothalamus Location

Located below the thalamus near the base of the brain.

Hypothalamus Scenario

A person's ability to regulate hunger, thirst, and body temperature is disrupted. Which brain structure is most directly involved?

Pituitary Gland

Releases hormones that regulate growth and influence other endocrine glands.

Pituitary Gland Location

Located beneath the hypothalamus and connected to it.

Pituitary Gland Scenario

A brain structure signals an endocrine gland to release hormones involved in growth and other bodily functions. Which structure is most directly involved?

Hippocampus

Plays a major role in forming new explicit memories.

Hippocampus Location

Located in the medial temporal lobe of each cerebral hemisphere.

Hippocampus Scenario

A person can remember childhood events but has difficulty forming new explicit memories after brain damage. Which structure is likely affected?

Amygdala

Helps process emotional information, particularly fear and threat.

Amygdala Location

Located deep within the temporal lobe as part of the limbic system.

Amygdala Scenario

A person has difficulty recognizing or responding appropriately to threatening emotional stimuli. Which structure may be involved?

Reward Center

Involves brain systems associated with pleasure, motivation, reinforcement, and reward.

Reward Center Scenario

A behavior becomes more likely because it produces a pleasurable or rewarding outcome. Which brain system is involved?

Frontal Lobes

Support planning, decision-making, voluntary movement, personality, and higher-level cognition.

Frontal Lobes Location

Located at the front of the cerebral cortex, behind the forehead.

Frontal Lobes Scenario

A person develops problems with planning and impulse control after damage to the front of the brain. Which lobe is most likely affected?

Parietal Lobes

Process bodily sensations and contribute to spatial processing.

Parietal Lobes Location

Located behind the frontal lobes and above the temporal and occipital lobes.

Parietal Lobes Scenario

A person has difficulty interpreting information about touch and body position. Which lobe is most involved?

Temporal Lobes

Process auditory information and contribute to language, memory, and object recognition.

Temporal Lobes Location

Located on the sides of the brain near the ears.

Temporal Lobes Scenario

A person has difficulty processing spoken language and recognizing certain sounds after damage near the ears. Which lobe may be affected?

Occipital Lobes

Primarily process visual information.

Occipital Lobes Location

Located at the back of the cerebral cortex.

Occipital Lobes Scenario

A person has normal functioning eyes but has difficulty processing visual information after brain damage. Which lobe is most likely affected?

Motor Cortex

Controls voluntary movements of skeletal muscles.

Motor Cortex Location

Located in the frontal lobe along the precentral gyrus.

Motor Cortex Scenario

A person intentionally moves their right hand. Which cortical region sends commands involved in that voluntary movement?

Somatosensory Cortex

Processes sensory information about touch, pressure, temperature, pain, and body position.

Somatosensory Cortex Location

Located in the parietal lobe along the postcentral gyrus.

Somatosensory Cortex Scenario

A person feels pressure on their hand and the brain processes where that sensation occurred. Which cortical region is involved?

Association Areas

Integrate information and support complex processes such as learning, memory, language, and reasoning.

Association Areas Location

Found throughout the cerebral cortex rather than being limited to one single lobe.

Association Areas Scenario

A person combines sensory information with memories to solve a complicated problem. Which cortical regions are involved?

Broca's Area

Important for producing spoken language.

Broca's Area Location

Typically located in the left frontal lobe.

Broca's Area Scenario

A person understands what others say but struggles to produce fluent speech after brain damage. Which area may be affected?

Wernicke's Area

Important for understanding spoken and written language.

Wernicke's Area Location

Typically located in the left temporal lobe.

Wernicke's Area Scenario

A person speaks fluently but their speech lacks meaningful content and they struggle to understand language. Which area may be affected?

Prefrontal Cortex

Supports executive functions such as planning, judgment, decision-making, and impulse control.

Prefrontal Cortex Location

The frontmost portion of the frontal lobe.

Prefrontal Cortex Scenario

A teenager must weigh consequences, suppress an impulsive response, and make a long-term plan. Which brain region is especially involved?

Motor Homunculus

A map-like representation showing how different parts of the body are represented in the motor cortex.

Sensory Homunculus

A map-like representation showing how different parts of the body are represented in the somatosensory cortex.

Contralateral Control

Refers to the tendency for each cerebral hemisphere to control or process information from the opposite side of the body.

Contralateral Scenario

Damage to the left motor cortex causes difficulty voluntarily moving the right side of the body. What principle does this demonstrate?

Lateralization

The specialization of certain functions in one cerebral hemisphere more than the other.

Lateralization Scenario

A patient shows greater difficulty with language after damage to the left hemisphere than the right. What concept does this illustrate?

Split-Brain

Describes a brain in which communication between the hemispheres has been severely disrupted, usually by cutting the corpus callosum.

Split-Brain Scenario

Information presented to one visual field cannot easily be communicated to the opposite hemisphere. What condition does this demonstrate?

Neuroplasticity

The brain's ability to reorganize and change its structure or functioning in response to experience, learning, or injury.

Neuroplasticity Scenario

After damage to one brain region, nearby areas begin taking over some of its functions. What process does this demonstrate?