Electrode-skin impedance changes due to an externally applied force
Bibliographic record
Abstract
The objective of this research is to analyze the effect of an externally applied force on surface biopotential electrodes. Electrode-skin impedance is an important factor in biopotential measurements. Lower electrode-skin interface impedance is desired because it improves the measurement of biological signals and helps mitigate noise/artifacts. Electrode-skin interface impedance was measured from two subjects (from 1 Hz to 1 MHz) while applying different magnitudes of force (0 N, 8.8 N, and 22.3 N) on Ag/AgCl electrodes that were placed on the ventral side of the forearm. When 8.8 N of force was applied, the impedance at 10 Hz decreased compared to when there was no externally applied force. Increasing the applied force to 22.3 N produced inconsistent results between the two subjects, with one exhibiting an increase in impedance, while the other a decrease. When all applied forces were removed from the electrodes, there was a sustained decrease in impedance, as compared to the initial impedance with no externally applied force. An externally applied force can reduce the electrode-skin impedance, which is maintained even after the force was removed.
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How this classification was reachedexpand
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 | 0.000 |
| 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 | 0.000 | 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 itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, 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".