Evidence map›Paper›PMID 41577095›Full record

ArticleNeuroImage2026

Optimizing electrode placement and information capacity for local field potentials in cortex.

Jace A Willis, Christopher E Wright, Ruoqian Zhu, Yilan Ruan, Joshua Stallings, Amada M Abrego, Takfarinas Medani, Promit Moitra, Arjun Ramakrishnan, Charles E Schroeder and 5 more

Abstract read
In one paragraph

Article in NeuroImage, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

  1. Novel ErScientific reports · 2026
    Article
  2. Article
  3. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

15 authors.

Jace A WillisDepartment of Neurosurgery, University of Texas Health Science Center, TX 77030, USA.
Christopher E WrightDepartment of Bioengineering, Rice University, TX 77030, USA.
Ruoqian ZhuDepartment of Mathematics, Rice University, TX 77030, USA.
Yilan RuanDepartment of Mathematics, Rice University, TX 77030, USA.
Joshua StallingsDepartment of Computer Science, Rice University, TX 77030, USA.
Amada M AbregoDepartment of Neurosurgery, University of Texas Health Science Center, TX 77030, USA.
Takfarinas MedaniDepartment of Electrical & Computer Engineering, University of Southern California Viterbi, CA 90089, USA.
Promit MoitraBiological Sciences and Bioengineering, Indian Institute of Technology Kanpur, Kanpur, India.
Arjun RamakrishnanDepartment of Psychiatry, Columbia University College of Physicians and Surgeons, NY 10032, USA.
Charles E SchroederCenter for Biomedical Imaging and Neuromodulation, Nathan Kline Institute, NY 10962, USA; Department of Electrical & Computer Engineering, Rice University, TX 77030, USA.
Anand A JoshiDepartment of Electrical & Computer Engineering, University of Southern California Viterbi, CA 90089, USA.
Nitin TandonDepartment of Neurosurgery, University of Texas Health Science Center, TX 77030, USA; Department of Electrical & Computer Engineering, Rice University, TX 77030, USA.
Richard M LeahyDepartment of Electrical & Computer Engineering, University of Southern California Viterbi, CA 90089, USA.
John C MosherDepartment of Neurosurgery, University of Texas Health Science Center, TX 77030, USA.
John P SeymourDepartment of Neurosurgery, University of Texas Health Science Center, TX 77030, USA; Department of Electrical & Computer Engineering, Rice University, TX 77030, USA. Electronic address: john.p.seymour@uth.tmc.edu.

Funding

Project 5: ComputationalP50MH109429 · NIMH · NATHAN S. KLINE INSTITUTE FOR PSYCH RES · PI Michael Peter Milham · 2017 to 2026
$25.3M
BrainStorm: Highly Extensible Software for Advanced Electrophysiology and MEG/EEG ImagingR01EB026299 · NIBIB · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LEAHY, RICHARD M · 2018 to 2025
$5.4M
Cortical and thalamic mechanisms of selective auditory attentionR01DC012947 · NIDCD · NATHAN S. KLINE INSTITUTE FOR PSYCH RES · PI NEYMOTIN, SAMUEL A, SCHROEDER, CHARLES E · 2013 to 2022
$5.2M
DIrectional and SCalable (DISC) Microelectrode Array for Speech DecodingUG3NS125487 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI JOHN P SEYMOUR, NITIN TANDON · 2023 to 2026
$4.6M
Neural Recording and Simulation Tools to Address the Mesoscale GapRF1NS133972 · NINDS · UNIVERSITY OF TEXAS HLTH SCI CTR HOUSTON · PI MOSHER, JOHN COMPTON, SCHROEDER, CHARLES E · 2023 to 2023
$4.5M
A Toolkit for Analysis and Visualization of Preclinical Rodent Neuroimaging ExperimentsR01NS121761 · NINDS · UNIVERSITY OF CALIFORNIA LOS ANGELES · PI Allan James MacKenzie-Graham, David W Shattuck · 2022 to 2026
$3.1M
NIBIB NIH HHS R01 EB026299NIDCD NIH HHS R01 DC012947NIMH NIH HHS P50 MH109429NINDS NIH HHS R01 NS121761NINDS NIH HHS RF1 NS133972NINDS NIH HHS UG3 NS125487
6 · The paper itself

Abstract

Recent neurosurgery advancements include improved stereotactic targeting and increased density and specificity of electrophysiological evaluation. This study introduces a subject-specific, in silico modeling tool for optimizing electrode placement and maximizing coverage with a variety of devices. The basis for optimization is the Shannon-Hartley information capacity of field potentials derived from dipolar sources. The approach integrates subject-specific MRI data with finite element modeling (FEM) used to simulate the sensitivity of subdural and intracortical devices. Sensitivity maps, or lead fields, from these models enable the comparison of different electrode placements, contact sizes, contact configurations, and substrate properties, which are often overlooked factors. One key tool is a genetic algorithm that optimizes electrode placement by maximizing information capacity. Another is a sparse sensor method, Sparse Electrode Placement for Input Optimization (SEPIO), that selects the best sensor subsets for accurate source classification. We demonstrate several use cases for clinicians, engineers, and researchers. Overall, these open-source tools provide a quantitative framework to select devices from a neurosurgical armament and to optimize device and contact placement. Using these tools may help refine electrode coverage with low channel count devices while minimizing the burden of invasive surgery. The study demonstrates that optimized electrode placement significantly improves the information capacity and signal quality of local field potential (LFP) recordings. The tools developed offer a valuable approach for refining neurosurgical techniques and enhancing the design of neural implants.

Indexed as

Cerebral CortexElectrodes, ImplantedModels, NeurologicalComputer SimulationFinite Element AnalysisGenetic AlgorithmsHumansLocal Field Potential MeasurementMagnetic Resonance ImagingElectrode scarcityInformation mappingLFPOptimizationSurgery planningTrajectory

Identifiers

PMID41577095
PMCPMC13373879

What OpenQuestion holds

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LicenceCC BY
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.