Evidence map›Paper›PMID 23838067›Full record

ArticleJournal of neural engineering2013

Advantages of closed-loop calibration in intracortical brain-computer interfaces for people with tetraplegia.

Beata Jarosiewicz, Nicolas Y Masse, Daniel Bacher, Sydney S Cash, Emad Eskandar, Gerhard Friehs, John P Donoghue, Leigh R Hochberg

Registry-linked trialAbstract readCase ReportsComparative Study
In one paragraph

Article in Journal of neural engineering, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00912041 (BrainGate2), which is not on this map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing 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.

NCT00912041 narecruitingnot on this map

BrainGate2: Feasibility Study of an Intracortical Neural Interface System for Persons With Tetraplegia

TypeinterventionalSponsorLeigh R. Hochberg, MD, PhD.Ran2009 to 2038Enrolled27ConditionsTetraplegia, Spinal Cord Injuries, Amyotrophic Lateral Sclerosis, Brain Stem InfarctionsArmsPlacement of the BrainGate2 sensor(s) into the motor-related cortex
3 · Its place in the literature

Who cites it

54 citing papers in PubMed.

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  11. Speech motor cortex enables BCI cursor control and click.bioRxiv : the preprint server for biology · 2024
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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

8 authors.

Beata JarosiewiczDepartment of Neuroscience, Brown University, 2 Stimson Ave., Box 1994, Providence, RI 02912, USA. beata@brown.edu
Nicolas Y Masse
Daniel Bacher
Sydney S Cash
Emad Eskandar
Gerhard Friehs
John P Donoghue
Leigh R Hochberg

Funding

Restoring Communication with an Intracortical Neural Interface SystemR01DC009899 · NIDCD · MASSACHUSETTS GENERAL HOSPITAL · PI HOCHBERG, LEIGH R · 2009 to 2017
$7.0M
STATIC AND DYNAMIC ORGANIZATION OF PRIMATE MOTOR CORTEXR01NS025074 · NINDS · BROWN UNIVERSITY · PI DONOGHUE, JOHN P · 1987 to 2016
$4.7M
Static and Dynamic Organization of Primate Motor CortexR37NS025074 · NINDS · BROWN UNIVERSITY · PI DONOGHUE, JOHN P · 2002 to 2009
$3.4M
Cortical Control of an Assistive Robotic ArmRC1HD063931 · NICHD · BROWN UNIVERSITY · PI DONOGHUE, JOHN P · 2009 to 2010
$951k
Influencing Children's Beliefs Through LanguageR03HD053403 · NICHD · UNIVERSITY OF VIRGINIA · PI KEEN, RACHEL ELIZABETH · 2007 to 2008
$150k
NICHD NIH HHS N01 HD053403NICHD NIH HHS N01HD10018NICHD NIH HHS RC1 HD063931NICHD NIH HHS RC1HD063931NIDCD NIH HHS R01 DC009899NIDCD NIH HHS R01DC009899NINDS NIH HHS NS25074NINDS NIH HHS R01 NS025074NINDS NIH HHS R37 NS025074
6 · The paper itself

Abstract

objectiveBrain-computer interfaces (BCIs) aim to provide a means for people with severe motor disabilities to control their environment directly with neural activity. In intracortical BCIs for people with tetraplegia, the decoder that maps neural activity to desired movements has typically been calibrated using 'open-loop' (OL) imagination of control while a cursor automatically moves to targets on a computer screen. However, because neural activity can vary across contexts, a decoder calibrated using OL data may not be optimal for 'closed-loop' (CL) neural control. Here, we tested whether CL calibration creates a better decoder than OL calibration even when all other factors that might influence performance are held constant, including the amount of data used for calibration and the amount of elapsed time between calibration and testing. APPROACH: Two people with tetraplegia enrolled in the BrainGate2 pilot clinical trial performed a center-out-back task using an intracortical BCI, switching between decoders that had been calibrated on OL versus CL data. MAIN

resultsEven when all other variables were held constant, CL calibration improved neural control as well as the accuracy and strength of the tuning model. Updating the CL decoder using additional and more recent data resulted in further improvements. SIGNIFICANCE: Differences in neural activity between OL and CL contexts contribute to the superiority of CL decoders, even prior to their additional 'adaptive' advantage. In the near future, CL decoder calibration may enable robust neural control without needing to pause ongoing, practical use of BCIs, an important step toward clinical utility.

Indexed as

AlgorithmsTask Performance and AnalysisBrain-Computer InterfacesBrain MappingCalibrationFeedback, PhysiologicalFemaleHumansImaginationMiddle AgedMotor CortexMovementQuadriplegiaReproducibility of ResultsSensitivity and SpecificityUnited States

Identifiers

PMID23838067
PMCPMC3775656

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Registered trials

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.