Evidence map›Paper›PMID 12068033›Full record

ArticleThe Journal of physiology2002

Rhythm generation in monkey motor cortex explored using pyramidal tract stimulation.

A Jackson, R L Spinks, T C B Freeman, D M Wolpert, R N Lemon

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 36 papers.

0numbers the graph read from it
0cells of the map it votes in
36citing papers in PubMed
1.3field-weighted citation impact, top 24% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

36 citing papers in PubMed, 118 citations in OpenAlex.

  1. Trial
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  5. Only the Fastest Corticospinal Fibers Contribute to β Corticomuscular Coherence.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021
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  9. Beta Oscillations in Working Memory, Executive Control of Movement and Thought, and Sensorimotor Function.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2019
    Article
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  12. Primary motor and sensory cortical areas communicate via spatiotemporally coordinated networks at multiple frequencies.Proceedings of the National Academy of Sciences of the United States of America · 2016
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

A JacksonSobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, UK.
R L Spinks
T C B Freeman
D M Wolpert
R N Lemon
University College London · GBSobell House · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We investigated whether stimulation of the pyramidal tract (PT) could reset the phase of 15-30 Hz beta oscillations observed in the macaque motor cortex. We recorded local field potentials (LFPs) and multiple single-unit activity from two conscious macaque monkeys performing a precision grip task. EMG activity was also recorded from the second animal. Single PT stimuli were delivered during the hold period of the task, when oscillations in the LFP were most prominent. Stimulus-triggered averaging of the LFP showed a phase-locked oscillatory response to PT stimulation. Frequency domain analysis revealed two components within the response: a 15-30 Hz component, which represented resetting of on-going beta rhythms, and a lower frequency 10 Hz response. Only the higher frequency could be observed in the EMG activity, at stronger stimulus intensities than were required for resetting the cortical rhythm. Stimulation of the PT during movement elicited a greatly reduced oscillatory response. Analysis of single-unit discharge confirmed that PT stimulation was capable of resetting periodic activity in motor cortex. The firing patterns of pyramidal tract neurones (PTNs) and unidentified neurones exhibited successive cycles of suppression and facilitation, time locked to the stimulus. We conclude that PTN activity directly influences the generation of the 15-30 Hz rhythm. These PTNs facilitate EMG activity in upper limb muscles, contributing to corticomuscular coherence at this same frequency. Since the earliest oscillatory effect observed following stimulation was a suppression of firing, we speculate that inhibitory feedback may be the key mechanism generating such oscillations in the motor cortex.

Indexed as

AlgorithmsAnimalsDatabases, FactualElectric StimulationElectromyographyEvoked Potentials, MotorFemaleHand StrengthMacacaMotor CortexPyramidal Tracts

Identifiers

PMID12068033
PMCPMC2290363
OpenAlexW1968728758

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.