Evidence map›Paper›PMID 32754340›Full record

ArticleHealthcare technology letters2020

Stimulus waveform design for decreasing charge and increasing stimulation selectivity in retinal prostheses.

Pragya Kosta, Kyle Loizos, Gianluca Lazzi

Open access · goldAbstract read
In one paragraph

Article in Healthcare technology letters, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

10 citing papers in PubMed, 10 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Impact of Retinal Degeneration on Response of ON and OFF Cone Bipolar Cells to Electrical Stimulation.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2023
    Article
  6. Selective Activation of Retinal Ganglion Cell Subtypes Through Targeted Electrical Stimulation Parameters.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2022
    Article
  7. Article
  8. Article
  9. Article
  10. Targeted Stimulation of Retinal Ganglion Cells in Epiretinal Prostheses: A Multiscale Computational Study.IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society · 2020
    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

3 authors at 2 institutions in 1 country.

Pragya KostaDepartment of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA.ORCID 0000-0002-2141-8700
Kyle LoizosDepartment of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA.
Gianluca LazziDepartment of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA.
University of Southern California · USUniversity of Utah · US

Funding

Connectomes and Computational Models of Degenerated Retina for Retinal Prosthetic DesignR21EY028744 · NEI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI LAZZI, GIANLUCA · 2018 to 2019
$392k
NEI NIH HHS R21 EY028744
6 · The paper itself

Abstract

Retinal degenerative diseases, such as retinitis pigmentosa, begin with damage to the photoreceptor layer of the retina. In the absence of presynaptic input from photoreceptors, networks of electrically coupled AII amacrine and cone bipolar cells have been observed to exhibit oscillatory behaviour and result in spontaneous firing of ganglion cells. This ganglion cell activity could interfere with external stimuli provided by retinal prosthetic devices and potentially degrade their performance. In this work, the authors computationally investigate stimulus waveform designs, which can improve the performance of retinal prostheses by suppressing undesired spontaneous firing of ganglion cells and generating precise temporal spiking patterns. They utilise a multi-scale computational model for electrical stimulation of degenerated retina based on the admittance method and NEURON simulation environments. They present a class of asymmetric biphasic pulses that can generate precise ganglion cell firing patterns with up to 55% lower current requirements compared to traditional symmetric biphasic pulses. This lower current results in activation of only proximal ganglion cells, provides more focused stimulation and lowers the risk of tissue damage.

Indexed as

bioelectric potentialsbiological tissuescellular biophysicscone bipolar cellsdegenerated retinadiseaseselectrical stimulationeyeganglion cell activitymultiscale computational modelneurophysiologyoscillatory behaviourphotoreceptor layerphotoreceptorspresynaptic inputprostheticsproximal ganglion cellsretinal degenerative diseasesretinal prosthesesretinal prosthetic devicesRetinitis pigmentosatemporal spiking patternstissue damage

Identifiers

PMID32754340
PMCPMC7353818
OpenAlexW3024680205

What OpenQuestion holds

Textmetadata
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.