After a stroke, a patient has difficulty comprehending speech but retains the ability to speak fluently, though the words lack meaning. Which brain region is most likely damaged?

Appeared in: RRB Nsg. Superintendent-2026 (Shift -3rd)

Explanation

The patient's symptoms describe receptive aphasia, also known as Wernicke's aphasia.
In this condition, speech production (fluency) is intact, but the content is meaningless ('word salad') because language comprehension is severely impaired.
Wernicke's area, responsible for language comprehension, is located in the posterior superior temporal lobe of the dominant (usually left) hemisphere.
Therefore, damage to Wernicke's area in the left temporal lobe is the most likely cause.

Option B: Damage to the visual cortex in the occipital lobe causes visual disturbances like cortical blindness or visual field deficits, not a primary language disorder like aphasia.
Option C: Damage to Broca's area causes expressive aphasia. Patients with Broca's aphasia have non-fluent, slow, and labored speech, although their comprehension is relatively intact. This is the opposite of the patient's presentation.
Option D: The somatosensory cortex processes sensory information like touch, pain, and temperature. Damage here leads to sensory loss on the contralateral side of the body, not language deficits.

Visual 1: Diagram - A lateral view of the left cerebral hemisphere, clearly labeling Broca's area in the frontal lobe and Wernicke's area in the temporal lobe to show their distinct locations.
Visual 2: Table - A comparative table outlining the key features (fluency, comprehension, repetition, location) of Wernicke's, Broca's, and Global aphasia.

Clinical Relevance

Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Types of aphasia and their corresponding neuroanatomical locations in acute care settings.
Nurses must be able to differentiate between types of aphasia to implement appropriate communication strategies. For a patient with Wernicke's aphasia, use simple, short sentences, gestures, and visual aids, as their comprehension is impaired.
It is crucial not to mistake Wernicke's aphasia for a psychiatric disorder or confusion. The patient is not delirious; they have a specific language deficit.
Patient and family education is vital. Explaining that the patient can hear but cannot understand helps manage frustration and improves interaction.

How to Approach the Question

First, analyze the patient's symptoms described in the clinical scenario. Break down the language deficit into two key components: speech fluency and language comprehension.
Identify the patient's fluency: The question states the patient 'retains the ability to speak fluently'.
Identify the patient's comprehension: The question states the patient has 'difficulty comprehending speech' and their words 'lack meaning'.
Match this pattern (fluent speech + poor comprehension) to the correct type of aphasia. This is the classic presentation of Wernicke's (receptive) aphasia.
Finally, recall or deduce the neuroanatomical location associated with Wernicke's aphasia, which is the posterior temporal lobe of the dominant hemisphere.
Evaluate the options to find the one that correctly links the aphasia type to its location.

Concept Tested & Keywords

Concept Tested: Types of aphasia and their corresponding neuroanatomical locations.
Stem keywords: stroke, difficulty comprehending speech, speak fluently, words lack meaning
Lead-in keywords: Which brain region
Clinical cues: The combination of impaired comprehension and fluent but nonsensical speech is the key diagnostic clue.

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Practise the full RRB Nsg. Superintendent-2026 (Shift -3rd)

Attempt every question from this paper in a timed mock, then review the full solution for each one.