Evidence map›Paper›PMID 21544070›Full record

Trial reportNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2011

Neuromodulatory neurotransmitters influence LTP-like plasticity in human cortex: a pharmaco-TMS study.

Alexei Korchounov, Ulf Ziemann

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed, 2 pooled it
5.3field-weighted citation impact, top 5% 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

44 citing papers in PubMed, 2 syntheses or guidelines pooled it, 92 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Pharmacological Manipulation of Cortical Inhibition in the Dorsolateral Prefrontal Cortex.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2018
    Trial
  5. Two distinct interneuron circuits in human motor cortex are linked to different subsets of physiological and behavioral plasticity.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2014
    Trial
  6. Deleterious effects of a low amount of ethanol on LTP-like plasticity in human cortex.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2014
    Trial
  7. Trial
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Clinical diagnostic utility of transcranial magnetic stimulation in neurological disorders. Updated report of an IFCN committee.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2023
    Review
  17. Microglial Cytokines Mediate Plasticity Induced by 10 Hz Repetitive Magnetic Stimulation.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  18. Article
  19. Assessing the mechanisms of brain plasticity by transcranial magnetic stimulation.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023
    Review
  20. Article
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

2 authors at 1 institution in 1 country.

Alexei KorchounovDepartment of Neurology, Goethe-University Frankfurt, Frankfurt, Germany.
Ulf Ziemann
Goethe University Frankfurt · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Long-term potentiation (LTP) of synaptic efficacy is considered a fundamental mechanism of learning and memory. At the cellular level a large body of evidence demonstrated that the major neuromodulatory neurotransmitters dopamine (DA), norepinephrine (NE), and acetylcholine (ACh) influence LTP magnitude. Noninvasive brain stimulation protocols provide the opportunity to study LTP-like plasticity at the systems level of human cortex. Here we applied paired associative stimulation (PAS) to induce LTP-like plasticity in the primary motor cortex of eight healthy subjects. In a double-blind, randomized, placebo-controlled, crossover design, the acute effects of a single oral dose of the neuromodulatory drugs cabergoline (DA agonist), haloperidol (DA antagonist), methylphenidate (indirect NE agonist), prazosine (NE antagonist), tacrine (ACh agonist), and biperiden (ACh antagonist) on PAS-induced LTP-like plasticity were examined. The antagonists haloperidol, prazosine, and biperiden depressed significantly the PAS-induced LTP-like plasticity observed under placebo, whereas the agonists cabergoline, methylphenidate, and tacrine had no effect. Findings demonstrate that antagonists in major neuromodulatory neurotransmitter systems suppress LTP-like plasticity at the systems level of human cortex, in accord with evidence of their modulating action of LTP at the cellular level. This provides further supportive evidence for the known detrimental effects of these drugs on LTP-dependent mechanisms such as learning and memory.

Indexed as

AdolescentAdrenergic AgonistsAdrenergic AntagonistsAdultCholinergic AgonistsCholinergic AntagonistsCross-Over StudiesDopamine AgonistsDopamine AntagonistsDouble-Blind MethodFemaleHumansLong-Term PotentiationMaleMemoryMemory DisordersAdrenergic AgonistsAdrenergic AntagonistsCholinergic AgonistsCholinergic AntagonistsDopamine AgonistsDopamine AntagonistsNeurotransmitter Agents

Identifiers

PMID21544070
PMCPMC3154108
OpenAlexW2016467780

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.