Behaviorally Fractionated Reaction Time to an Omitted Stimulus: Tests with Visual, Auditory, and Tactile Stimuli
Bibliographic record
Abstract
Two experiments tested the adequacy of behavioral criteria to fractionate reaction time (RT) into independent premotor (cognitive) and motor components. Healthy participants performed an omitted stimulus reaction time task in which they responded to the termination of a train of lateralized visual, auditory or tactile stimuli. Exp. 1 with 48 participants (24 men) showed premotor RT was independent of motor RT in each sensory modality and did not differ as a function of side of presentation or sex. Repeated tests administered in Exp. 2 (N= 12) also showed no significant association between the behaviorally fractionated measures. These results are comparable to those obtained using muscle potential to fractionate RT and suggest behaviorally fractionated premotor and motor RT could be a reliable, useful tool in the assessment of cognitive and motor processing in different sensory modalities of healthy people or those with brain injury, disease, or drug-induced disturbances.
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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 | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.001 | 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) | 0.002 | 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 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".