Evidence map›Paper›PMID 28553835›Full record

Trial reportNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2018

Pharmacological Manipulation of Cortical Inhibition in the Dorsolateral Prefrontal Cortex.

Bahar Salavati, Tarek K Rajji, Reza Zomorrodi, Daniel M Blumberger, Robert Chen, Bruce G Pollock, Zafiris J Daskalakis

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 19% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.

  1. Potential TMS biomarkers for GABAAlcohol, clinical & experimental research · 2025
    Pooled it
  2. Trial
  3. Clinical utility and prospective of TMS-EEG: Updated review from an international expert group.Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology · 2026
    Review
  4. Article
  5. Article
  6. Review
  7. Pharmacological mechanisms of interhemispheric signal propagation: a TMS-EEG study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020
    Article
  8. Article
  9. Article
  10. Article
  11. 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

7 authors at 3 institutions in 1 country.

Bahar SalavatiCentre for Addiction and Mental Health, Toronto, Canada.
Tarek K RajjiCentre for Addiction and Mental Health, Toronto, Canada.
Reza ZomorrodiCentre for Addiction and Mental Health, Toronto, Canada.
Daniel M BlumbergerCentre for Addiction and Mental Health, Toronto, Canada.
Robert ChenDivision of Neurology, Department of Medicine, University Health Network and University of Toronto, Toronto, Canada.
Bruce G PollockCentre for Addiction and Mental Health, Toronto, Canada.
Zafiris J DaskalakisCentre for Addiction and Mental Health, Toronto, Canada.
Centre for Addiction and Mental Health · CAUniversity Health Network · CAUniversity of Toronto · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cortical inhibition (CI) occurs largely through GABA receptor-mediated inhibitory neurotransmission, which can be modulated by cholinergic, dopaminergic, and glutamatergic inputs. Transcranial magnetic stimulation (TMS) can be used to index CI through a paradigm known as long-interval CI (LICI). When TMS is combined with electroencephalography (EEG), LICI can index GABA receptor-mediated inhibitory neurotransmission in the dorsolateral prefrontal cortex (DLPFC). We conducted a hypothesis-driven pharmacological study to assess the role of cholinergic, dopaminergic, GABAergic, and glutamatergic neurotransmission on LICI from the DLPFC using TMS-EEG. In this randomized controlled, double-blind crossover within-subject study, 12 healthy participants received five sessions of LICI to the DLPFC in a random order, each preceded by the administration of placebo or one of the four active drugs. LICI was assessed after each drug administration and compared to LICI after placebo. Relative to placebo, baclofen resulted in a significant increase in LICI, while rivastigmine resulted in a significant decrease in LICI. Dextromethorphan and L-DOPA did not result in a significant change in LICI relative to placebo. Our study confirms that LICI in the DLPFC is largely mediated by GABA

Indexed as

AdultBaclofenCholinesterase InhibitorsCross-Over StudiesDextromethorphanDopamine AgentsDouble-Blind MethodElectroencephalographyExcitatory Amino Acid AntagonistsFemaleGABA-B Receptor AgonistsHumansLevodopaMaleNeural InhibitionPrefrontal CortexBaclofenCholinesterase InhibitorsDextromethorphanDopamine AgentsExcitatory Amino Acid AntagonistsGABA-B Receptor AgonistsLevodopaRivastigmine

Identifiers

PMID28553835
PMCPMC5729552
OpenAlexW2619681528

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.