1. Conduction aphasia is linked to disruption of the:

A. Ventral stream
B. Dorsal stream
C. Corpus callosum
D. Hippocampus

Question

1. Conduction aphasia is linked to disruption of the:

A. Ventral stream
B. Dorsal stream
C. Corpus callosum
D. Hippocampus

BlackTom AI · Accepted Answer

Question restatement: The item asks which brain pathway disruption is linked to conduction aphasia, with answer options labeled A through D.
Option A: Ventral stream. The ventral (occipitotemporal) pathway is primarily associated with semantic processing and object recognition (the what pathway). Conduction aphasia is not typically attributed to disruption of the ventral stream, so this option is inconsistent with the classic localization of conduction aphasia.
Option B: Dorsal stream. The dorsal language pathway (including the arcuate fasciculus) connects temporal and frontal language regions and is more closely tied to repetition and auditory-motor integration. Conduction aphasia is classically described as a disruption of the arcuate fasciculus within the dorsal stream, leading to impaired repetition despite relatively preserved comprehension and fluent speech. This makes B a strong fit to the concept.
Option C: Corpus callosum. The corpus callosum enables interhemispheric communication. Lesions here can cause split-brain phenomena or interhemispheric transfer issues, but conduction aphasia is not typically explained by corpus callosum disruption. Therefore, this option is not aligned with the symptom profile of conduction aphasia.
Option D: Hippocampus. The hippocampus is key for memory formation and retrieval. While memory problems can accompany various disorders, conduction aphasia’s hallmark is not memory impairment but aphasic repetition deficits due to disrupted language networks. Thus this option is incorrect.
Additional note on the provided answer text: The listed answer options include some placeholders like 'No answer text provided.' which are not meaningful content. They should be ignored for the purpose of identifying the correct option, which remains the dorsal language pathway. Overall, the reasoning supports selecting the dorsal stream as the locus for conduction aphasia due to its role in auditory-more-than-phonological integration and the classic arcuate fasciculus connection between language areas.
In summary, analysis shows: ventral stream mismatch; dorsal stream aligns with conduction aphasia; corpus callosum and hippocampus do not explain the characteristic deficits; and extraneous placeholder options do not affect the correct choice being the dorsal stream.

202570_PSYC3_73232 Final Exam: Part ONE A Multiple Choice (Remotely Proctored)

1. Conduction aphasia is linked to disruption of the: A. Ventral stream B. Dorsal stream C. Corpus callosum D. Hippocampus

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