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Record W1483009182 · doi:10.1002/9780470515563.ch10

Cortical Control of Whole‐Arm Motor Tasks

2007· review· en· W1483009182 on OpenAlexaff
John Kalaska, Lauren E. Sergio, Paul Cisek

Bibliographic record

VenueNovartis Foundation symposium · 2007
Typereview
Languageen
FieldNeuroscience
TopicMotor Control and Adaptation
Canadian institutionsUniversité de Montréal
Fundersnot available
KeywordsPremotor cortexPrimary motor cortexNeuroscienceMotor cortexComputer scienceSensory systemTask (project management)Movement (music)Motor controlPosterior parietal cortexIsometric exerciseSupplementary motor areaAction (physics)PsychologyBiologyFunctional magnetic resonance imagingAnatomyPhysicsDorsum

Abstract

fetched live from OpenAlex

Making an arbitrary motor response to a sensory signal would appear to require at least two sequential steps--planning the appropriate response and generating a motor command to implement it. However, neuronal correlates of these two putative steps do not occur in strict serial order, nor are they subserved by separate cortical regions. Instead, they are distributed in a continuous, overlapping and non-uniform manner across the cerebral cortex, including primary motor, premotor and parietal regions. These processes take the form of temporal and spatial gradients of cell activity that are distributed within and across cortical regions. Instead of two serial steps, these neuronal events may be better described in terms of two parallel functions--action specification and action selection. These processes occur continuously, both before and during movement. Recent studies show that the activity of single cells in the caudal part of the primary motor cortex is strongly modulated by arm geometry and by task dynamics during whole-arm isometric and reaching tasks. This indicates that these cells contribute to the transformation between neural representations of the global attributes of motor actions and of the mechanical details of their implementation.

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: Not applicable · Consensus signal: none
GenreCandidate signal: Review · Consensus signal: Review
Teacher disagreement score0.003
Threshold uncertainty score0.009

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0010.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0020.002
Science and technology studies0.0000.001
Scholarly communication0.0010.001
Open science0.0010.001
Research integrity0.0010.001
Insufficient payload (model declined to judge)0.0030.003

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 head0.082
GPT teacher head0.348
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 source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designNot applicable
Domainnot available
GenreReview

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

Citations48
Published2007
Admission routes1
Has abstractyes

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