Evidence map›Paper›PMID 34870202›Full record

ArticleBrain communications2021

Implantable brain-computer interface for neuroprosthetic-enabled volitional hand grasp restoration in spinal cord injury.

Iahn Cajigas, Kevin C Davis, Benyamin Meschede-Krasa, Noeline W Prins, Sebastian Gallo, Jasim Ahmad Naeem, Anne Palermo, Audrey Wilson, Santiago Guerra, Brandon A Parks and 13 more

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Brain communications, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
4.1field-weighted citation impact, top 5% 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

29 citing papers in PubMed, 54 citations in OpenAlex.

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  18. The speech neuroprosthesis.Nature reviews. Neuroscience · 2024
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

23 authors at 4 institutions in 2 countries.

Iahn CajigasDepartment of Neurological Surgery, University of Miami, Miami, FL 33136, USA.ORCID https://orcid.org/0000-0002-5808-453X
Kevin C DavisDepartment of Biomedical Engineering, University of Miami, Miami, FL 33146, USA.
Benyamin Meschede-KrasaDepartment of Brain and Cognitive Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Noeline W PrinsDepartment of Biomedical Engineering, University of Miami, Miami, FL 33146, USA.
Sebastian GalloDepartment of Biomedical Engineering, University of Miami, Miami, FL 33146, USA.
Jasim Ahmad NaeemDepartment of Biomedical Engineering, University of Miami, Miami, FL 33146, USA.
Anne PalermoDepartment of Physical Therapy, University of Miami, Miami, FL 33146, USA.
Audrey WilsonMiami Project to Cure Paralysis, University of Miami, Miami, FL 33136, USA.
Santiago GuerraDepartment of Biomedical Engineering, University of Miami, Miami, FL 33146, USA.
Brandon A ParksDepartment of Biomedical Engineering, University of Miami, Miami, FL 33146, USA.
Lauren ZimmermanDepartment of Biomedical Engineering, University of Miami, Miami, FL 33146, USA.
Katie GantMiami Project to Cure Paralysis, University of Miami, Miami, FL 33136, USA.
Allan D LeviDepartment of Neurological Surgery, University of Miami, Miami, FL 33136, USA.
W Dalton DietrichDepartment of Neurological Surgery, University of Miami, Miami, FL 33136, USA.
Letitia FisherMiami Project to Cure Paralysis, University of Miami, Miami, FL 33136, USA.
Steven VanniDepartment of Neurological Surgery, University of Miami, Miami, FL 33136, USA.
John Michael TauberDepartment of Brain and Cognitive Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Indie C GarwoodDepartment of Brain and Cognitive Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
John H AbelDepartment of Brain and Cognitive Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Emery N BrownDepartment of Brain and Cognitive Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Michael E IvanDepartment of Neurological Surgery, University of Miami, Miami, FL 33136, USA.
Abhishek PrasadDepartment of Biomedical Engineering, University of Miami, Miami, FL 33146, USA.
Jonathan JagidDepartment of Neurological Surgery, University of Miami, Miami, FL 33136, USA.
University of Miami · USMassachusetts General Hospital · USMassachusetts Institute of Technology · USUniversity of Ruhuna · LK

Funding

Medical Scientist Training ProgramT32GM112601 · NIGMS · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI LEMMON, SANDRA K. · 2017 to 2021
$1.9M
Supplement to Neurobiological Engineering Training ProgramT32EB019940 · NIBIB · MASSACHUSETTS INSTITUTE OF TECHNOLOGY · PI JASANOFF, ALAN · 2015 to 2025
$1.4M
University of MIami Neurosurgery eDucation Strategy UMINDSR25NS108937 · NINDS · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI DIETRICH, W DALTON, IAVARONE, ANTONIO · 2019 to 2024
$558k
Automatic Control of Propanidid and Propofol Anesthesia-Induced UnconsciousnessF32AG064886 · NIA · MASSACHUSETTS GENERAL HOSPITAL · PI ABEL, JOHN HANS · 2019 to 2020
$132k
NIA NIH HHS F32 AG064886NIBIB NIH HHS T32 EB019940NIGMS NIH HHS T32 GM112601NINDS NIH HHS R25 NS108937
6 · The paper itself

Abstract

Loss of hand function after cervical spinal cord injury severely impairs functional independence. We describe a method for restoring volitional control of hand grasp in one 21-year-old male subject with complete cervical quadriplegia (C5 American Spinal Injury Association Impairment Scale A) using a portable fully implanted brain-computer interface within the home environment. The brain-computer interface consists of subdural surface electrodes placed over the dominant-hand motor cortex and connects to a transmitter implanted subcutaneously below the clavicle, which allows continuous reading of the electrocorticographic activity. Movement-intent was used to trigger functional electrical stimulation of the dominant hand during an initial 29-weeks laboratory study and subsequently via a mechanical hand orthosis during in-home use. Movement-intent information could be decoded consistently throughout the 29-weeks in-laboratory study with a mean accuracy of 89.0% (range 78-93.3%). Improvements were observed in both the speed and accuracy of various upper extremity tasks, including lifting small objects and transferring objects to specific targets. At-home decoding accuracy during open-loop trials reached an accuracy of 91.3% (range 80-98.95%) and an accuracy of 88.3% (range 77.6-95.5%) during closed-loop trials. Importantly, the temporal stability of both the functional outcomes and decoder metrics were not explored in this study. A fully implanted brain-computer interface can be safely used to reliably decode movement-intent from motor cortex, allowing for accurate volitional control of hand grasp.

Indexed as

brain–computer interfacecervical quadriplegiaelectrocorticographyfunctional electrical stimulationspinal cord injury

Identifiers

PMID34870202
PMCPMC8637800
OpenAlexW3210203308

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.