A psychophysiological investigation of emotion regulation in chronic severe posttraumatic stress disorder
Bibliographic record
Abstract
There have been few direct examinations of the volitional control of emotional responses to provocative stimuli in PTSD. To address this gap, an emotion regulation task was administered to 27 Operation Enduring Freedom/Operation Iraqi Freedom combat veterans and 23 healthy controls. Neutral and aversive photographs were presented to participants who did or did not employ emotion regulation strategies. Objective indices included corrugator electromyogram, the late positive potential, and the electrocardiogram. On uninstructed trials, participants with PTSD exhibited blunted cardiac reactivity rather than the exaggerated cardioacceleratory responses seen in trauma cue reactivity studies. On interleaved regulation trials, no measure evidenced group differences in voluntary emotion regulation. Persons with PTSD may not differ from normals in their capacity to voluntarily regulate normative emotional responses to provocative stimuli in the laboratory, though they may nevertheless respond differentially on uninstructed trials and endorse symptoms of dyscontrol pathognomonic of the disorder outside of the laboratory.
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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) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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) | 0.001 | 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".