Design and fabrication of a microelectrode array dedicated for cortical electrical stimulation
Bibliographic record
Abstract
A manufacturing process has been developed for a microelectrode array that can be used for stimulation of the visual cortex to provide an effective sense of sight to the blind. The first prototype merges sixteen 316L stainless steel electrodes on a 4/spl times/4 array. Several arrays can then be assembled together in a mosaic configuration to cover a large portion of the visual area. To reduce brain injuries while maximizing the quality of the phosphenes, the electrodes must be sharp, thin (50 /spl mu/m-diameter), separated 400 /spl mu/m apart and have stimulation sites located at 1.5 mm under the surface of the cortex. Using electrical discharge machining followed by an electrochemical surface treatment, it has been shown that it was possible to reach such geometrical ratios at this scale. This technique can be combined with electrodeposition of porous platinum to create low impedance stimulation sites. Encapsulation and biocompatibility of the array are also discussed.
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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 | 0.000 |
| 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 | 0.001 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 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".