Evidence map›Paper›PMID 32435756›Full record

ArticleEpilepsy & behavior reports2020

Acute modulation of the limbic network with low and high-frequency stimulation of the human fornix.

Ganne Chaitanya, Emilia Toth, Diana Pizarro, Leonidas Iasemidis, Teresa A Murray, Kristen Riley, Sandipan Pati

Open access · goldAbstract read
In one paragraph

Article in Epilepsy & behavior reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.9field-weighted citation impact, top 31% 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

5 citing papers in PubMed, 12 citations in OpenAlex.

  1. Trial
  2. Review
  3. Article
  4. Article
  5. 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 2 institutions in 1 country.

Ganne ChaitanyaEpilepsy and Cognitive Neurophysiology Laboratory, Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, USA.
Emilia TothEpilepsy and Cognitive Neurophysiology Laboratory, Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, USA.
Diana PizarroEpilepsy and Cognitive Neurophysiology Laboratory, Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, USA.
Leonidas IasemidisCenter for Biomedical Engineering and Rehabilitation Science, Louisiana Tech Institute, Ruston, LA, USA.
Teresa A MurrayCenter for Biomedical Engineering and Rehabilitation Science, Louisiana Tech Institute, Ruston, LA, USA.
Kristen RileyDepartment of Neurosurgery, University of Alabama at Birmingham, Birmingham, AL, USA.
Sandipan PatiEpilepsy and Cognitive Neurophysiology Laboratory, Department of Neurology, University of Alabama at Birmingham, Birmingham, AL, USA.
University of Alabama at Birmingham · USLouisiana Tech University · US

Funding

From ion channel dynamics to human EEG and MEG: multiscale neuronal models validated by human dataRF1MH117155 · NIMH · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI BAZHENOV, MAKSIM V, CASH, SYDNEY S · 2018 to 2018
$3.7M
NIMH NIH HHS RF1 MH117155
6 · The paper itself

Abstract

Targeted stimulation of white matter has opened newer perspectives in the field of neuromodulation, towards an attempt to improve memory or as a therapy for epilepsy. Stimulation of the fornix, being a part of the Papez circuit, is likely to modulate the limbic network excitability. However, the stimulation-frequency dependent variability in network excitability is unknown. In the case study, which involved stereo electroencephalographic (SEEG) recording of field potentials in a 48-year old left-handed woman with suspected temporal lobe epilepsy, we demonstrated the network effects of acute low (1 and 10 Hz) and high (50 Hz) frequency electrical stimulation of fornix. Mapping the short-latency evoked responses to forniceal stimulation confirmed the SEEG target localization within the Papez circuit. Low and high-frequency stimulation of the fornix produced opposite effects in the post-stimuli excitability, with the latter causing increased excitability in the limbic network that culminated in a clinical seizure. A distinct spectral peak around 8 Hz confirmed that sensing field potentials from the forniceal white matter is feasible. This is the first case study that provided an insight into how the temporal patterning of forniceal stimulation altered the downstream limbic network excitability.

Indexed as

Evoked potentialsExcitabilityFornixHigh gamma activationStimulationTemporal lobe epilepsy

Identifiers

PMID32435756
PMCPMC7232081
OpenAlexW3018226701

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.