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Record W1001766145 · doi:10.11575/prism/25329

Circadian Influences on Brain Damage, Regeneration, and Neurogenesis

2013· dissertation· en· W1001766145 on OpenAlexfundno aff
Brooke D. Rakai

Bibliographic record

VenuePRISM (University of Calgary) · 2013
Typedissertation
Languageen
FieldNeuroscience
TopicCircadian rhythm and melatonin
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsNeurogenesisCircadian rhythmNeuroscienceRegeneration (biology)PsychologyBiologyCell biology

Abstract

fetched live from OpenAlex

The number of people affected by brain damage each year ranges from millions to billions. Research into factors that affect brain damage and recovery from the disabilities incurred is pertinent to alleviating stress put on individuals, their families, healthcare systems, and society as a whole. Circadian rhythms are ubiquitous throughout the animal kingdom, throughout individual organisms, and even in each cell of an organism. Therefore, circadian influences on brain damage, recovery, and physical brain repair warrant further investigation. In this dissertation, the role of the circadian clock in stroke outcome, and in models of brain repair will be examined. I hypothesize that circadian rhythmicity is involved not only in outcomes following brain damage, but may also be a significant contributor to neuroregeneration. Here, I show the effects of the time of day that a stroke occurs on behavioural and anatomical outcome in rats. This is followed by an investigation into the rhythmic expression of clock genes in regenerated medial prefrontal cortex (MPFC), and the effects that circadian dysfunction has on regeneration in both the neonatal MPFC, and adult subgranular zone of the dentate gyrus in mice.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.003
Threshold uncertainty score0.009

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0010.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.000

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.

Opus teacher head0.013
GPT teacher head0.217
Teacher spread0.203 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2013
Admission routes1
Has abstractyes

Explore more

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