[2025-10-01T19:27:04.244800] [QUERYOME] Starting research for query 615: 'Instructions:
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer.

Question:
Cerebellar lesion can produce all of the following except:

Options:
A. Nystagmus
B. Past pointing
C. Resting tremor
D. Ataxic gait'
[2025-10-01T19:27:04.275028] [PI] Starting research for query: 'Instructions:
 Answer the question below. First, respond with the single best option letter (A, B, C, or D). Then provide a concise reasoning (1–3 sentences). Use both the retrieved evidence and your own medical knowledge to choose the most accurate answer.

Question:
Cerebellar lesion can produce all of the following except:

Options:
A. Nystagmus
B. Past pointing
C. Resting tremor
D. Ataxic gait'
[2025-10-01T19:27:04.277586] Saving text to bench_final/run1/medmcqa/medmcqa_2175/pi_initial_prompt.txt
[2025-10-01T19:27:04.282788] [PI] Calling o3 for initial analysis...
[2025-10-01T19:27:09.213331] [PI] Reasoning iteration 1
[2025-10-01T19:27:09.215263] [PI reasoning] **Analyzing cerebellar lesions**

The user provided a question regarding cerebellar lesions and which symptom isn't produced by them. From my knowledge, cerebellar lesions lead to symptoms like intention tremor, dysmetria, nystagmus, past pointing, ataxic gait, and hypotonia. However, resting tremor is linked to basal ganglia lesions, such as in Parkinson's disease. Therefore, the correct answer is C: Resting tremor. I'll gather some evidence to support this conclusion next.
[2025-10-01T19:27:09.218233] [PI] Executing function call 1: hybrid_search
[2025-10-01T19:27:09.219815] [PI] Function arguments: {'query': 'cerebellar lesion intention tremor vs resting tremor basal ganglia nystagmus past pointing ataxic gait', 'k': 10, 'faiss_weight': 0.7, 'bm25_weight': 0.3, 'use_rrf': True}
[2025-10-01T19:27:09.222639] Saving JSON to bench_final/run1/medmcqa/medmcqa_2175/pi_iteration_1_tool_call_2_hybrid_search.json
[2025-10-01T19:27:11.483825] [PI] Function hybrid_search executed successfully
[2025-10-01T19:27:11.486477] Saving JSON to bench_final/run1/medmcqa/medmcqa_2175/pi_iteration_1_tool_result_2_hybrid_search.json
[2025-10-01T19:27:11.492534] [PI] Continuing reasoning with 1 function responses...
[2025-10-01T19:27:20.378114] [PI] Reasoning iteration 2
[2025-10-01T19:27:20.379764] [PI reasoning] **Gathering evidence on tremors**

I'm looking for citations that clarify how cerebellar lesions lead to intention tremors rather than resting tremors. I found that cerebellar lesions rarely show resting tremors; for instance, article 30963396 notes that tremors occur in postural and intentional positions but not at rest. I also see supporting points in Kovacs 2019. While some sources mention resting tremors can be rare, I think focusing on 30963396 as evidence is solid. Let's compile these citations clearly and build a straightforward response.
[2025-10-01T19:27:20.382203] [PI] Executing function call 1: bm25_mesh_terms_search
[2025-10-01T19:27:20.383790] [PI] Function arguments: {'query': 'Cerebellar diseases resting tremor', 'k': 10}
[2025-10-01T19:27:20.386594] Saving JSON to bench_final/run1/medmcqa/medmcqa_2175/pi_iteration_2_tool_call_2_bm25_mesh_terms_search.json
[2025-10-01T19:27:20.984710] [PI] Function bm25_mesh_terms_search executed successfully
[2025-10-01T19:27:20.987457] Saving JSON to bench_final/run1/medmcqa/medmcqa_2175/pi_iteration_2_tool_result_2_bm25_mesh_terms_search.json
[2025-10-01T19:27:20.993768] [PI] Continuing reasoning with 1 function responses...
[2025-10-01T19:27:29.413620] [PI] Reasoning iteration 3
[2025-10-01T19:27:29.417250] [PI] No function calls found in response
[2025-10-01T19:27:29.418969] [PI] No more function calls - research complete
[2025-10-01T19:27:29.422095] Saving text to bench_final/run1/medmcqa/medmcqa_2175/pi_final_answer.txt
[2025-10-01T19:27:29.427087] [QUERYOME] Query completed successfully
