Shoulder Palsy due to Middle Cerebral Artery Embolism
Bibliographic record
Abstract
An 80-year-old Japanese woman with paroxysmal atrial fibrillation suddenly developed sensory aphasia, with moderate weakness restricted to the right shoulder with normal muscle strength in the elbow, wrist and fingers. There were no other neurological abnormalities. Diffusion-weighted cranial magnetic resonance imaging demonstrated scattered infarct lesions in the territory of the left middle cerebral artery (MCA), probably due to cardiogenic embolism. Right-sided shoulder palsy might have been caused by a localized infarct lesion in the precentral gyrus on the left side, and resolved within 10 days. Because the area corresponding to the shoulder is small in the primary motor cortex, isolated shoulder palsy due to cortical infarction is very rare. Its etiology remains controversial, but borderzone ischemia between the anterior cerebral artery and MCA, and atherothrombosis of the cortical branch of MCA are proposed. Our case shows that the area corresponding to the shoulder receives blood from the cortical branch of MCA. J Med Cases. 2013;4(2):86-88 doi: https://doi.org/10.4021/jmc936w
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.002 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".