Subthalamic deep brain stimulation does not induce striatal dopamine release in Parkinson's disease
Why this work is in the frame
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Bibliographic record
Abstract
Deep brain stimulation of the subthalamic nucleus (STN) is an increasingly prevalent treatment for advanced Parkinson's disease (PD). Its main mechanism of action is thought to be a reduction in the inhibitory outflow from basal ganglia to cerebral cortex. However, recent animal experiments have led to the suggestion that high frequency stimulation of the STN also acts by promoting dopamine release. We tested this hypothesis by performing [11C]raclopride PET on and off stimulation in six patients with PD and implanted STN stimulators. There was no difference in tracer binding in the striatum between the two testing conditions. We conclude that high frequency stimulation of the STN does not act by increasing dopamine release.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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 it