Evidence map›Paper›PMID 30267724›Full record

ArticleJournal of neuroscience methods2019

Cognitive tasks and human ambulatory electrocorticography using the RNS System.

Stephen Meisenhelter, Markus E Testorf, Mark A Gorenstein, Nicholas R Hasulak, Thomas K Tcheng, Joshua P Aronson, Barbara C Jobst

Abstract read
In one paragraph

Article in Journal of neuroscience methods, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.0field-weighted citation impact, top 25% 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

9 citing papers in PubMed, 26 citations in OpenAlex.

  1. A guide to neuromodulation in drug-resistant epilepsy.Epileptic disorders : international epilepsy journal with videotape · 2026
    Review
  2. Intracranial substrates of meditation-induced neuromodulation in the amygdala and hippocampus.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  3. Long-Term Ambulatory Intracranial EEG.Stereotactic and functional neurosurgery · 2025
    Review
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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

7 authors at 3 institutions in 1 country.

Stephen MeisenhelterSchool of Graduate and Advanced Studies, Dartmouth College, Hanover, NH 03755, United States. Electronic address: stephen.meisenhelter.gr@dartmouth.edu.
Markus E TestorfThayer School of Engineering, Dartmouth College, Hanover, NH 03755, United States; Department of Neurology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, United States.
Mark A GorensteinDepartment of Neurology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, United States.
Nicholas R HasulakNeuroPace Inc., Mountain View, CA, United States.
Thomas K TchengNeuroPace Inc., Mountain View, CA, United States.
Joshua P AronsonDepartment of Neurology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, United States.
Barbara C JobstSchool of Graduate and Advanced Studies, Dartmouth College, Hanover, NH 03755, United States; Department of Neurology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, United States.
Dartmouth College · USDartmouth–Hitchcock Medical Center · USNeuroPace (United States) · US

Funding

Mechanisms of Cognitive Impairment in Temporal Lobe EpilepsyR01NS074450 · NINDS · DARTMOUTH COLLEGE · PI HOLMES, GREGORY L., JOBST, BARBARA · 2011 to 2015
$1.7M
NINDS NIH HHS R01 NS074450
6 · The paper itself

Abstract

backgroundElectrocorticography studies are typically conducted in patients undergoing video EEG monitoring, but these studies are subject to confounds such as the effects of pain, recent anesthesia, analgesics, drug changes, antibiotics, and implant effects. NEW

methodTechniques were developed to obtain electrocorticographic (ECoG) data from freely moving subjects performing navigational tasks using the RNS

resultsTask synchronization using the synchronization marker technique provides a quantitative measure of clock uncertainty, and can align data to task events with less than 4 ms of uncertainty. Hippocampal ECoG activity was found to change immediately before an incorrect response to a math problem compared to hippocampal activity before a correct response. In addition, subjects were found to have variable but significant changes in theta band power in the hippocampus during navigation compared to when subjects were not navigating. We found that there is theta-gamma phase-amplitude coupling in the right hippocampus while subjects stand still during a navigation task. COMPARISON WITH EXISTING

methodsAn alignment technique described in this study improves the upper bound on task-ECoG alignment uncertainty from approximately 30 ms to under 4 ms. The RNS System is one of the first platforms capable of providing untethered ambulatory ECoG recording in humans, allowing for the study of real world instead of virtual navigation. Compared to intracranial video EEG studies, studies using the RNS System platform are not subject to confounds caused by the drugs and recent surgery inherent to the perioperative environment. Furthermore, these subjects provide the opportunity to record from the same electrodes over the course of many years.

conclusionsThe RNS System enables us to study human navigation with unprecedented clarity. While RNS System patients have fewer electrodes implanted than video EEG patients, the lack of external artifact and confounds from recent surgery make this system a useful tool to further human electrophysiology research.

Indexed as

Implantable NeurostimulatorsAdultAlgorithmsBrainElectrocorticographyElectrodes, ImplantedHippocampusHumansMental ProcessesMental RecallMiddle AgedNeuropsychological TestsProblem SolvingSpatial NavigationAmbulatory ECoGCognitionECoGElectrocorticographyEpilepsyMemoryNavigationRNS System

Identifiers

PMID30267724
PMCPMC6439470
OpenAlexW2894210798

What OpenQuestion holds

Textmetadata
LicenceTDM
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.