Increased Left Prefrontal Activation During Staring/Mutism Episodes in a Patient With Resistant Catatonic Schizophrenia: A Near Infrared Spectroscopy Study
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Bibliographic record
Abstract
OBJECTIVE: To present the first near infrared spectroscopy (NIRS) study of a patient with resistant catatonic schizophrenia during residual episodes of catatonia-related symptoms. BACKGROUND: Functional imaging studies generally point to a decreased cortical activation in catatonic patients, with the notable exception of increased orbitofrontal/medial prefrontal activity elicited by negative stimuli. METHODS: Cortical activity of the left anterior prefrontal area was recorded with a Techen 4 x 4 NIRS apparatus. Four episodes of staring/mutism were recorded and averaged. Compared with normal activity, these episodes were characterized by increased cortical activation. CONCLUSIONS: Within its methodologic limitations, the present observation suggests that increased anterior prefrontal activation in catatonic patients is not specific to negative stimuli. Known functions of the anterior prefrontal cortex such as self monitoring, reallocation of attention, or conflict resolution might underlie these findings. These also attest to the potential of NIRS for functional imaging of vulnerable subjects.
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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 | 0.000 |
| 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 it