Levemopamil reduces spatial learning deficit following transient occulusion of common carotid arteries in normotensive rats
Bibliographic record
Abstract
The effect of the calcium channel blocker and 5-HT2 antagonist levemopamil on spatial learning impairment of rats subjected to transient bilateral clamping of carotid arteries (BCCA) was investigated. In addition, the acute effect of BCCA on local cerebral blood flow was measured in the presence and absence of levemopamil in a separate group of rats. Pretreatment with levemopamil prevented the BCCA-induced increase in escape latency during the test trials and ameliorated the BCCA-induced decrease in spatial bias during a probe trial. Under these experimental conditions, local cerebral blood flow fell to near ischaemic values in all mid- and forebrain regions during occlusion of the carotid arteries. However, pretreatment with levemopamil affected the BCCA-induced blood flow changes only in one brain area of 34 investigated. The present data suggest that pretreatment with levemopamil reduces impairment in spatial behaviour and that this effect seems not related to the compound's cerebral vasodilatory action, but to direct neuronal mechanisms.
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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 | 0.001 |
| 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".