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Record W2159526013 · doi:10.1109/cne.2007.369758

Evaluation of approximate stochastic Hodgkin-Huxley models

2007· article· en· W2159526013 on OpenAlexaff
Ian C. Bruce

Bibliographic record

Venuenot available
Typearticle
Languageen
FieldPhysics and Astronomy
Topicstochastic dynamics and bifurcation
Canadian institutionsMcMaster University
Fundersnot available
KeywordsHodgkin–Huxley modelGatingNoise (video)AlgorithmMarkov chainGaussian noiseChannel (broadcasting)Markov processGaussianComputer scienceMathematicsStatistical physicsApplied mathematicsStatisticsPhysicsArtificial intelligenceTelecommunications

Abstract

fetched live from OpenAlex

Fox and colleagues (Fox, 1997; Fox ang Lu, 1994) derived an algorithm based on stochastic differential equations for approximating the kinetics of ion channel gating that is substantially simpler and faster than "exact" algorithms for simulating Markov process models of channel gating. However, Mino and colleagues (2002) argued that the approximation may not be sufficiently accurate in describing the statistics of action potential generation. Bruce (2007) subsequently showed that some of the inaccuracies described by Mino et al. (2002 were due to implementation choices, but several important inaccuracies remained. The objective of this study was to develop a framework for analyzing the remaining inaccuracies and determining their origin. Simulations of a patch of membrane with voltage-gated sodium and potassium channels were performed using an exact algorithm for the kinetics of channel gating and the approximate algorithm of Fox. The Fox algorithm assumes that channel gating particle dynamics have a stochastic term that is uncorrelated, zero-mean Gaussian noise, whereas the simulation results of this study demonstrate that in many cases the stochastic term in the Fox algorithm should be correlated and non-Gaussian noise with a non-zero mean. The results indicate that the source of these differences in noise statistics is that the Fox algorithm does not adequately describe the combined behavior of the multiple activation particles in each sodium and potassium channel (three and four, respectively)

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 distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.890
Threshold uncertainty score0.298

Codex and Gemma teacher scores by category

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

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 head0.034
GPT teacher head0.299
Teacher spread0.265 · 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 teacher head, not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
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

Citations1
Published2007
Admission routes1
Has abstractyes

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