Famous Brain Cases Quiz: Phineas Gage, H.M. & More
Updated
Damage to specific brain regions reveals their functions: prefrontal cortex in personality (Gage), hippocampus in memory (H.M.), Broca's area in speech, corpus callosum in hemispheric communication, and medial temporal lobes in memory consolidation (Wearing).
This 15-question quiz tests your understanding of the most famous case studies in neuroscience. From Phineas Gage to patient H.M., these patients transformed our knowledge of how the brain supports personality, memory, language, and consciousness. Perfect for students, teachers, or anyone curious about neuropsychology.
Each case highlights a specific brain area by showing what happens when it is damaged or disconnected. Before starting, recall that lesions in distinct regions produce characteristic deficits—like Broca's aphasia from left frontal damage or anterograde amnesia from bilateral hippocampal loss.
The questions
Phineas Gage's personality changed dramatically after an iron rod damaged which brain region?
Patient H.M. developed severe anterograde amnesia after surgical removal of which structures?
Broca's patient 'Tan' could only say the word 'tan' because of a lesion in which area?
In split-brain patients, the left hemisphere typically cannot verbally report what the right hemisphere sees because:
Clive Wearing's dense amnesia resulted from damage to which brain region due to herpes encephalitis?
Which of the following is a key symptom of Broca's aphasia?
Phineas Gage's case provided early evidence that the frontal lobes are important for:
Patient H.M.'s ability to learn new motor skills (like mirror drawing) despite amnesia showed that:
In split-brain experiments, when an object is shown to the left visual field, the patient typically:
Clive Wearing's diary entries repeat 'I am now awake' because he:
Which brain area connects the two hemispheres and is severed in split-brain patients?
Broca's area is typically located in which hemisphere?
Damage to the orbitofrontal cortex can cause symptoms similar to Phineas Gage because this region is involved in:
In split-brain patients, if a word is flashed to the right visual field, the patient can read it aloud because:
Which statement best summarizes the lesson from H.M.'s case?
0 of 15 answered · 0 correct
Cheat sheet: key terms
| Phineas Gage | Prefrontal damage changed personality, showing frontal lobes regulate social behavior and decision-making. |
|---|---|
| Patient H.M. | Bilateral medial temporal lobectomy caused severe anterograde amnesia, proving hippocampus essential for new memories. |
| Broca's aphasia | Damage to left inferior frontal gyrus produces non-fluent speech with preserved comprehension. |
| Split-brain | Corpus callosotomy prevents interhemispheric transfer, so each hemisphere processes information independently. |
| Clive Wearing | Herpes encephalitis destroyed hippocampus, leaving him with dense anterograde and retrograde amnesia but intact procedural memory. |
| Patient Tan | Could only say 'tan' due to lesion in left frontal lobe, localizing speech production to Broca's area. |
Answers explained
Show all 15 answers
- Phineas Gage's personality changed dramatically after an iron rod damaged which brain region? Prefrontal cortex. The rod destroyed much of his prefrontal cortex, leading to impulsivity and poor social judgment. This case established the frontal lobes' role in personality.
- Patient H.M. developed severe anterograde amnesia after surgical removal of which structures? Medial temporal lobes (including hippocampus). Bilateral removal of the medial temporal lobes, especially the hippocampus, prevented H.M. from forming new long-term memories. He retained old memories and motor skills.
- Broca's patient 'Tan' could only say the word 'tan' because of a lesion in which area? Left inferior frontal gyrus. The lesion was in the left inferior frontal gyrus, now known as Broca's area, which is critical for speech production. Tan's comprehension remained intact.
- In split-brain patients, the left hemisphere typically cannot verbally report what the right hemisphere sees because: The corpus callosum is severed, blocking information transfer. Without the corpus callosum, visual information presented to the right hemisphere cannot reach left-hemisphere language areas, so the patient cannot name what they saw.
- Clive Wearing's dense amnesia resulted from damage to which brain region due to herpes encephalitis? Hippocampus. The virus destroyed his hippocampus and adjacent medial temporal lobes, leaving him unable to form new memories or recall most of his past. He still plays piano, showing preserved procedural memory.
- Which of the following is a key symptom of Broca's aphasia? Non-fluent, effortful speech with relatively preserved comprehension. Broca's aphasia involves damage to the left frontal lobe, causing slow, agrammatic speech. Comprehension of language is typically much better than production.
- Phineas Gage's case provided early evidence that the frontal lobes are important for: Personality and social behavior. After his injury, Gage became unreliable and socially inappropriate, suggesting the prefrontal cortex regulates personality. This was a landmark observation in the 19th century.
- Patient H.M.'s ability to learn new motor skills (like mirror drawing) despite amnesia showed that: Procedural memory depends on structures outside the medial temporal lobe. H.M. improved on mirror tracing over days without remembering the practice sessions. This demonstrated that procedural memory relies on basal ganglia and cerebellum, not the hippocampus.
- In split-brain experiments, when an object is shown to the left visual field, the patient typically: Cannot name it verbally but can pick it up with the left hand. The left visual field goes to the right hemisphere, which lacks language in most people. The right hemisphere controls the left hand, so the patient can select the object by touch but not say its name.
- Clive Wearing's diary entries repeat 'I am now awake' because he: Has a memory span of only seconds due to hippocampal damage. His anterograde amnesia is so profound that he cannot retain new information for more than a few seconds, leading to a constant feeling of just waking up.
- Which brain area connects the two hemispheres and is severed in split-brain patients? Corpus callosum. The corpus callosum is the largest white matter tract connecting the cerebral hemispheres. Severing it prevents communication, producing split-brain syndrome.
- Broca's area is typically located in which hemisphere? Left hemisphere (in most right-handed people). In about 95% of right-handers and 70% of left-handers, language is lateralized to the left hemisphere, including Broca's area.
- Damage to the orbitofrontal cortex can cause symptoms similar to Phineas Gage because this region is involved in: Reward processing and emotion regulation. The orbitofrontal cortex is part of the prefrontal cortex and helps evaluate rewards and regulate social emotions. Lesions here often lead to poor judgment and disinhibition.
- In split-brain patients, if a word is flashed to the right visual field, the patient can read it aloud because: Information goes to the left hemisphere, which contains language areas. The right visual field projects to the left hemisphere, where Broca's and Wernicke's areas reside. Thus, the patient can verbalize the word immediately.
- Which statement best summarizes the lesson from H.M.'s case? The hippocampus is essential for forming new declarative memories. H.M.'s inability to create new conscious memories after hippocampal removal proved that this structure is critical for declarative memory consolidation.
See it in 3D: open the interactive brain and click any region, or ask the AI coach anything you missed.