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Question #47456
The Question
A patient undergoes a surgical callosotomy (severing of the corpus callosum) to treat intractable epilepsy. Post-surgery, a researcher flashes an image of a key strictly in the patient's left visual field. Based on the functional anatomy of the human brain, which of the following responses is most likely to be observed?
Options
- A.
The patient will verbally identify the key but cannot pick it up with their left hand, as the right hemisphere lacks motor control.
- B.
The patient cannot verbally name the key but can successfully identify and pick it up by touch using their left hand.
- C.
The patient will verbally name the key and pick it up with their right hand, as the left hemisphere processes the left visual field.
- D.
The patient will be unable to perceive the image entirely because the optic chiasma is functionally dependent on the corpus callosum.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Comparative_Analysis
Sharpen your ability to evaluate multiple scenarios and distinguish between competing potential answers.
Concepts Behind This Question
Cerebrum|Contralateral_Signaling|Ipsilateral_vs_Contralateral_Signaling
Why This Question Is Tricky
Common Mistakes
Conceptual Pivot: Contralateral processing of visual fields and motor control versus the unilateral (left) localization of language centers.
Common Misconception: Students often confuse 'left eye' with 'left visual field' or assume that severing the corpus callosum halts basic sensory perception, failing to distinguish between the inability to perceive an object and the inability to verbally articulate it due to disconnection syndrome.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Neural Control and Coordination - Class 11 |
| Concept | Corpus Callosum Functionality |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |