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Erofeev A, Kazakov D, Makarevich N, Bolshakova A, Gerasimov E, Nekrasov A, Kazakin A, Komarevtsev I, Bolsunovskaja M, Bezprozvanny I, Vlasova O. An Open-Source Wireless Electrophysiological Complex for In Vivo Recording Neuronal Activity in the Rodent's Brain. SENSORS 2021; 21:s21217189. [PMID: 34770498 PMCID: PMC8587815 DOI: 10.3390/s21217189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Revised: 10/19/2021] [Accepted: 10/26/2021] [Indexed: 01/14/2023]
Abstract
Multi-electrode arrays (MEAs) are a widely used tool for recording neuronal activity both in vitro/ex vivo and in vivo experiments. In the last decade, researchers have increasingly used MEAs on rodents in vivo. To increase the availability and usability of MEAs, we have created an open-source wireless electrophysiological complex. The complex is scalable, recording the activity of neurons in the brain of rodents during their behavior. Schematic diagrams and a list of necessary components for the fabrication of a wireless electrophysiological complex, consisting of a base charging station and wireless wearable modules, are presented.
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Affiliation(s)
- Alexander Erofeev
- Laboratory of Molecular Neurodegeneration, Graduate School of Biomedical Systems and Technologies, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (A.B.); (E.G.); (I.B.)
- Correspondence: (A.E.); (O.V.)
| | - Dmitriy Kazakov
- National Technology Initiative Center for Advanced Manufacturing Technologies, Laboratory of Industrial Data Streaming Systems, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (D.K.); (N.M.); (M.B.)
| | - Nikita Makarevich
- National Technology Initiative Center for Advanced Manufacturing Technologies, Laboratory of Industrial Data Streaming Systems, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (D.K.); (N.M.); (M.B.)
| | - Anastasia Bolshakova
- Laboratory of Molecular Neurodegeneration, Graduate School of Biomedical Systems and Technologies, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (A.B.); (E.G.); (I.B.)
| | - Evgenii Gerasimov
- Laboratory of Molecular Neurodegeneration, Graduate School of Biomedical Systems and Technologies, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (A.B.); (E.G.); (I.B.)
| | - Arseniy Nekrasov
- Neuropribor, Limited Liability Company, 194223 Saint Petersburg, Russia;
| | - Alexey Kazakin
- Laboratory of Nano- and Microsystem Technology, Joint Institute of Science and Technology, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (A.K.); (I.K.)
| | - Ivan Komarevtsev
- Laboratory of Nano- and Microsystem Technology, Joint Institute of Science and Technology, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (A.K.); (I.K.)
| | - Marina Bolsunovskaja
- National Technology Initiative Center for Advanced Manufacturing Technologies, Laboratory of Industrial Data Streaming Systems, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (D.K.); (N.M.); (M.B.)
| | - Ilya Bezprozvanny
- Laboratory of Molecular Neurodegeneration, Graduate School of Biomedical Systems and Technologies, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (A.B.); (E.G.); (I.B.)
- Department of Physiology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX 75390, USA
| | - Olga Vlasova
- Laboratory of Molecular Neurodegeneration, Graduate School of Biomedical Systems and Technologies, Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia; (A.B.); (E.G.); (I.B.)
- Correspondence: (A.E.); (O.V.)
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Ahn J, Phan HL, Cha S, Koo KI, Yoo Y, Goo YS. Synchrony of Spontaneous Burst Firing between Retinal Ganglion Cells Across Species. Exp Neurobiol 2020; 29:285-299. [PMID: 32921641 PMCID: PMC7492847 DOI: 10.5607/en20025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/27/2020] [Accepted: 08/31/2020] [Indexed: 01/16/2023] Open
Abstract
Neurons communicate with other neurons in response to environmental changes. Their goal is to transmit information to their targets reliably. A burst, which consists of multiple spikes within a short time interval, plays an essential role in enhancing the reliability of information transmission through synapses. In the visual system, retinal ganglion cells (RGCs), the output neurons of the retina, show bursting activity and transmit retinal information to the lateral geniculate neuron of the thalamus. In this study, to extend our interest to the population level, the burstings of multiple RGCs were simultaneously recorded using a multi-channel recording system. As the first step in network analysis, we focused on investigating the pairwise burst correlation between two RGCs. Furthermore, to assess if the population bursting is preserved across species, we compared the synchronized bursting of RGCs between marmoset monkey (callithrix jacchus), one species of the new world monkeys and mouse (C57BL/6J strain). First, monkey RGCs showed a larger number of spikes within a burst, while the inter-spike interval, burst duration, and inter-burst interval were smaller compared with mouse RGCs. Monkey RGCs showed a strong burst synchronization between RGCs, whereas mouse RGCs showed no correlated burst firing. Monkey RGC pairs showed significantly higher burst synchrony and mutual information than mouse RGC pairs did. Comprehensively, through this study, we emphasize that two species have a different bursting activity of RGCs and different burst synchronization suggesting two species have distinctive retinal processing.
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Affiliation(s)
- Jungryul Ahn
- Department of Physiology, Chungbuk National University School of Medicine, Cheongju 28644, Korea
| | - Huu Lam Phan
- Department of Biomedical Engineering, University of Ulsan, Ulsan 44610, Korea
| | - Seongkwang Cha
- Department of Physiology, Chungbuk National University School of Medicine, Cheongju 28644, Korea
| | - Kyo-In Koo
- Department of Biomedical Engineering, University of Ulsan, Ulsan 44610, Korea
| | - Yongseok Yoo
- Department of Electronics Engineering, Incheon National University, Incheon 22012, Korea
| | - Yong Sook Goo
- Department of Physiology, Chungbuk National University School of Medicine, Cheongju 28644, Korea
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Properties of Retinal Precursor Cells Grown on Vertically Aligned Multiwalled Carbon Nanotubes Generated for the Modification of Retinal Implant-Embedded Microelectrode Arrays. J Ophthalmol 2016; 2016:2371021. [PMID: 27200182 PMCID: PMC4856943 DOI: 10.1155/2016/2371021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 04/04/2016] [Indexed: 12/27/2022] Open
Abstract
Background. To analyze the biocompatibility of vertically aligned multiwalled carbon nanotubes (MWCNT), used as nanomodification to optimize the properties of prostheses-embedded microelectrodes that induce electrical stimulation of surviving retinal cells. Methods. MWCNT were synthesized on silicon wafers. Their growth was achieved by iron particles (Fe) or mixtures of iron-platinum (Fe-Pt) and iron-titanium (Fe-Ti) acting as catalysts. Viability, growth, adhesion, and gene expression of L-929 and retinal precursor (R28) cells were analyzed after nondirect and direct contact. Results. Nondirect contact had almost no influence on cell growth, as measured in comparison to reference materials with defined levels of cytotoxicity. Both cell types exhibited good proliferation properties on each MWCNT-coated wafer. Viability ranged from 95.9 to 99.8%, in which better survival was observed for nonfunctionalized MWCNT generated with the Fe-Pt and Fe-Ti catalyst mixtures. R28 cells grown on the MWCNT-coated wafers showed a decreased gene expression associated with neural and glial properties. Expression of the cell cycle-related genes CCNC, MYC, and TP53 was slightly downregulated. Cultivation on plasma-treated MWCNT did not lead to additional changes. Conclusions. All tested MWCNT-covered slices showed good biocompatibility profiles, confirming that this nanotechnology is a promising tool to improve prostheses bearing electrodes which connect with retinal tissue.
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Maghami MH, Sodagar AM, Lashay A, Riazi-Esfahani H, Riazi-Esfahani M. Visual prostheses: the enabling technology to give sight to the blind. J Ophthalmic Vis Res 2015; 9:494-505. [PMID: 25709777 PMCID: PMC4329712 DOI: 10.4103/2008-322x.150830] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 03/02/2014] [Indexed: 11/08/2022] Open
Abstract
Millions of patients are either slowly losing their vision or are already blind due to retinal degenerative diseases such as retinitis pigmentosa (RP) and age-related macular degeneration (AMD) or because of accidents or injuries. Employment of artificial means to treat extreme vision impairment has come closer to reality during the past few decades. Currently, many research groups work towards effective solutions to restore a rudimentary sense of vision to the blind. Aside from the efforts being put on replacing damaged parts of the retina by engineered living tissues or microfabricated photoreceptor arrays, implantable electronic microsystems, referred to as visual prostheses, are also sought as promising solutions to restore vision. From a functional point of view, visual prostheses receive image information from the outside world and deliver them to the natural visual system, enabling the subject to receive a meaningful perception of the image. This paper provides an overview of technical design aspects and clinical test results of visual prostheses, highlights past and recent progress in realizing chronic high-resolution visual implants as well as some technical challenges confronted when trying to enhance the functional quality of such devices.
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Affiliation(s)
- Mohammad Hossein Maghami
- Research Laboratory for Integrated Circuits and Systems (ICAS), Electrical Engineering Department, K.N. Toosi University of Technology, Tehran, Iran
| | - Amir Masoud Sodagar
- Research Laboratory for Integrated Circuits and Systems (ICAS), Electrical Engineering Department, K.N. Toosi University of Technology, Tehran, Iran ; Electrical Engineering Department, Polytechnique Montreal, Montreal, Quebec, Canada
| | - Alireza Lashay
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Hamid Riazi-Esfahani
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Riazi-Esfahani
- Eye Research Center, Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Aryan NP, Kaim H, Rothermel A. Electrode Materials: State-of-the-Art and Experiments. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/978-3-319-10052-4_6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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