Evidence map›Paper›PMID 38212523›Full record

ArticleNature nanotechnology2024

High-density transparent graphene arrays for predicting cellular calcium activity at depth from surface potential recordings.

Mehrdad Ramezani, Jeong-Hoon Kim, Xin Liu, Chi Ren, Abdullah Alothman, Chawina De-Eknamkul, Madison N Wilson, Ertugrul Cubukcu, Vikash Gilja, Takaki Komiyama and 1 more

Abstract read
In one paragraph

Article in Nature nanotechnology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing 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

31 citing papers in PubMed.

  1. Towards maximizing optical access through Smart Dura.Journal of neural engineering · 2026
    Article
  2. Article
  3. Review
  4. Article
  5. Stretchable large-area transparent nanowire composite arrays for label-free multimodal interrogation of cardiac physiology.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  6. Distinct laminar origins of sensory-evoked high-gamma and low-frequency ECoG signals revealed by optogenetics.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  7. "Tone-Arm" Neuromodulation MEMS Microcoil for In Vivo Imaging.Small (Weinheim an der Bergstrasse, Germany) · 2026
    Article
  8. Article
  9. Review
  10. Article
  11. 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

11 authors.

Mehrdad Ramezani *Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA.ORCID 0000-0002-3144-3192
Jeong-Hoon Kim *Department of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA.ORCID 0000-0002-1097-0110
Xin LiuDepartment of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA.ORCID 0000-0003-3993-3505
Chi RenDepartment of Neurosciences, University of California San Diego, La Jolla, CA, USA.
Abdullah AlothmanDepartment of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA.ORCID 0009-0005-9844-7453
Chawina De-EknamkulDepartment of NanoEngineering, University of California San Diego, La Jolla, CA, USA.ORCID 0000-0001-7776-9537
Madison N WilsonDepartment of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA.
Ertugrul CubukcuDepartment of NanoEngineering, University of California San Diego, La Jolla, CA, USA.
Vikash GiljaDepartment of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA.
Takaki KomiyamaDepartment of Neurosciences, University of California San Diego, La Jolla, CA, USA.ORCID 0000-0001-9609-4600
Duygu KuzumDepartment of Electrical and Computer Engineering, University of California San Diego, La Jolla, CA, USA. dkuzum@ucsd.edu.ORCID 0000-0002-2125-1285

Funding

Project 4U19NS123717 · NINDS · BOSTON UNIVERSITY (CHARLES RIVER CAMPUS) · PI KLEINFELD, DAVID · 2021 to 2025
$13.4M
Traveling Waves in Neocortical Circuits: Mechanisms, Computational Roles in Sensory Processing, and Impact on Sensory PerceptionU01NS131914 · NINDS · SALK INSTITUTE FOR BIOLOGICAL STUDIES · PI COLEMAN, TODD P, KUZUM, DUYGU · 2023 to 2025
$6.0M
Cortical Control of Motor LearningR01NS091010 · NINDS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KOMIYAMA, TAKAKI · 2015 to 2024
$3.7M
E-Organoids: Functional Brain Organoids Co-grafted with Transparent MicrothreadsDP2EB030992 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KUZUM, DUYGU · 2020 to 2020
$2.4M
Experience-driven plasticity of olfactory bulb odor representationsR01DC014690 · NIDCD · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KOMIYAMA, TAKAKI · 2015 to 2019
$1.9M
Neuro-flakes: Direct Voltage Imaging of Neural Activity with Atomically-thin Optoelectronic MaterialsR21EY033676 · NEI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI CUBUKCU, ERTUGRUL · 2022 to 2024
$576k
An Ultra High-Density Virtual Array with Nonlinear Processing of Multimodal Neural RecordingsR21EY029466 · NEI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KUZUM, DUYGU · 2018 to 2019
$455k
Multimodal Probing of Neural Activity Using Transparent Microelectrode ArraysR21EB026180 · NIBIB · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI KUZUM, DUYGU · 2018 to 2019
$433k
NEI NIH HHS R21 EY029466NEI NIH HHS R21 EY033676NIBIB NIH HHS DP2 EB030992NIBIB NIH HHS R21 EB026180NIDCD NIH HHS R01 DC014690NINDS NIH HHS R01 NS091010NINDS NIH HHS U01 NS131914NINDS NIH HHS U19 NS123717NSF ECCS-1542148NSF ECCS-1734940NSF ECCS-1752241NSF ECCS-2024776NSF ECCS-2139416
6 · The paper itself

Abstract

Optically transparent neural microelectrodes have facilitated simultaneous electrophysiological recordings from the brain surface with the optical imaging and stimulation of neural activity. A remaining challenge is to scale down the electrode dimensions to the single-cell size and increase the density to record neural activity with high spatial resolution across large areas to capture nonlinear neural dynamics. Here we developed transparent graphene microelectrodes with ultrasmall openings and a large, transparent recording area without any gold extensions in the field of view with high-density microelectrode arrays up to 256 channels. We used platinum nanoparticles to overcome the quantum capacitance limit of graphene and to scale down the microelectrode diameter to 20 µm. An interlayer-doped double-layer graphene was introduced to prevent open-circuit failures. We conducted multimodal experiments, combining the recordings of cortical potentials of microelectrode arrays with two-photon calcium imaging of the mouse visual cortex. Our results revealed that visually evoked responses are spatially localized for high-frequency bands, particularly for the multiunit activity band. The multiunit activity power was found to be correlated with cellular calcium activity. Leveraging this, we employed dimensionality reduction techniques and neural networks to demonstrate that single-cell and average calcium activities can be decoded from surface potentials recorded by high-density transparent graphene arrays.

Indexed as

GraphiteMetal NanoparticlesAnimalsCalciumElectrodes, ImplantedMiceMicroelectrodesPlatinumCalciumGraphitePlatinum

Identifiers

PMID38212523
PMCPMC11742260

What OpenQuestion holds

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Registered trials

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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.