0086 Sleep Preferentially Enhances Memory For A Cognitive Strategy But Not The Implicit Motor Skills Needed To Acquire It
Bibliographic record
Abstract
Sleep is beneficial for consolidation of both “cognitive procedural memory” (CPM) and “simple procedural memory” (SPM). CPM involves the acquisition of a novel cognitive strategy through the execution of a series of motor movements. By contrast, SPM involves motor skills learning of a cognitively simple sequence of movements. Sleep has been implicated in the consolidation of implicit CPM, whereas the role of sleep in implicit SPM remains unclear. The present study compared the differential benefit of sleep for CPM vs. implicit SPM consolidation. To disentangle and directly compare SPM to CPM, subjects were tested on: (1) the “classic” Tower of Hanoi task (ToH), where the solution requires the use of both recursive elements (i.e., a repetitive series of movements, thus involving SPM) and non-recursive elements (i.e., a non-repetitive series of movements that can only be learned by acquiring the underlying cognitive strategy, thus involving CPM); and (2) a “modified” version of the ToH, akin to the serial reaction time (SRT) task, designed to prevent the acquisition of a cognitive strategy, thus isolating the SPM component of the task. Participants (n=57) were trained on either the ToH or SRT, then retested on both tasks. Half were trained in the evening, retested after a night of sleep, and again after a day of wake (PM-AM-PM). The other half were counterbalanced (AM-PM-AM). The time taken to complete the ToH improved following sleep vs. wake from training to retest (F(2,52)=3.22,p=0.048), but not for the SRT (F(2,54)=0.324,p=0.725). Follow-up tests revealed that performance improved only for the ToH after sleep - and only after sleep - either immediately after training, or one day later. Moreover, sleep significantly enhanced the non-recursive elements but not the recursive elements of the ToH, but not the SRT. Sleep preferentially supported CPM, whereas implicit SPM improved regardless of sleep or wake. These results suggest sleep benefits the cognitive aspects of procedural memory, rather than strengthening implicitly acquired motor sequences involved to learn the strategy itself. N/A
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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 | 0.000 | 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) | 0.006 | 0.001 |
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".