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Zoltán Fekete     Institute, Department or Faculty Head 
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Zoltán Fekete published an article in May 2018.
Top co-authors See all
Zoltán Somogyvári

56 shared publications

Complex Systems and Computational Neuroscience Group, Wigner Research Center for Physics, Hungarian Academy of Sciences, Hungary

Péter Fürjes

31 shared publications

MEMS Laboratory, Centre for Energy Research, H-1121 Budapest, Hungary

A. Pongrácz

26 shared publications

MTA EK MFA MEMS Laboratory, H-1083 Budapest, Hungary

Zsolt Borhegyi

26 shared publications

Eotvos Lorand Tudomanyegyetem Biologiai Intezet, Budapest, HUNGARY

Zoltán F. Kisvárday

14 shared publications

Laboratory for Cortical Systems Neuroscience, Department of Anatomy, Histology and Embryology, University of Debrecen, Debrecen, 4032, Hungary.

Publication Record
Distribution of Articles published per year 
(2012 - 2018)
Total number of journals
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Publications See all
PROCEEDINGS-ARTICLE 0 Reads 0 Citations Optical characterization of an infrared neural optrode Ágoston Csaba Horváth, Csanad Ors Boros, Örs Sepsi, Szabolcs... Published: 01 May 2018
2018 Symposium on Design, Test, Integration & Packaging of MEMS and MOEMS (DTIP), doi: 10.1109/dtip.2018.8394242
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Article 0 Reads 0 Citations Optical Imaging of Intrinsic Neural Signals and Simultaneous MicroECoG Recording Using Polyimide Implants Anita Zátonyi, Zsolt Borhegyi, Dorottya Cserpán, Zoltán Somo... Published: 29 August 2017
Proceedings, doi: 10.3390/proceedings1040610
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This paper presents the simultaneous use of intrinsic optical signal imaging (iOS) and micro-electrocorticography (μECoG) techniques by introducing a transparent polymer based microelectrode array into the optical recording chamber used in vivo functional mapping experiments in anaesthetized cat. The robustness of its site impedance was proven in electrochemical impedance spectroscopy. To demonstrate the feasibility of the combined optical-electrical recording, we have run several stimulus protocols and measured the evoked optical and electrical responses of the visual cortex.
Article 0 Reads 0 Citations Multimodal Neuroimaging Microtool for Infrared Optical Stimulation, Thermal Measurements and Recording of Neuronal Activ... Ágoston C. Horváth, Örs Sepsi, Csanád Ö. Boros, Szabolcs Bel... Published: 25 August 2017
Proceedings, doi: 10.3390/proceedings1040494
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Infrared neural stimulation (INS) uses pulsed near-infrared light to generate highly controlled temperature transients in neurons, leading them to fire action potentials. Stimulation of the superficial layer of the intact brain has been presented, however, the stimulation of the deep neural tissue has larger potential in view of therapeutic use. To reveal the underlying mechanism of deep tissue stimulation properly, we present the design, the fabrication scheme and functional testing of a novel, multimodal microelectrode for future INS experiments. Three modalities—electrophysiological recording, thermal measurements and infrared waveguiding abil—were integrated based on silicon MEMS technology. Due to the advanced functionalities, a single probe is sufficient to determine safe stimulation parameters in vivo. As far as we know, this is the first multimodal microelectrode designed for INS studies in deep neural tissue. In this paper, the technology and results of chip-scale measurements are presented.
PREPRINT 0 Reads 0 Citations A silicon-based microelectrode array with a microdrive for monitoring brainstem regions of freely moving rats Gergely Márton, Péter Baracskay, Barbara Cseri, Bela Plosz, ... Published: 02 August 2017
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Objective. Exploring neural activity behind synchronization and time locking in brain circuits is one of the most important tasks in neuroscience. Our goal was to design and characterize a microelectrode array (MEA) system specifically for obtaining in vivo extracellular recordings from three deep-brain areas of freely moving rats, simultaneously. The target areas, the deep mesencephalic reticular-, pedunculopontine tegmental- and pontine reticular nuclei are related to the regulation of sleep-wake cycles. Approach. The three targeted nuclei are collinear, therefore a single-shank MEA was designed in order to contact them. The silicon-based device was equipped with 3*4 recording sites, located according to the geometry of the brain regions. Furthermore, a microdrive was developed to allow fine actuation and post-implantation relocation of the probe. The probe was attached to a rigid printed circuit board, which was fastened to the microdrive. A flexible cable was designed in order to provide not only electronic connection between the probe and the amplifier system, but sufficient freedom for the movements of the probe as well. Main results. The microdrive was stable enough to allow precise electrode targeting into the tissue via a single track. The microelectrodes on the probe were suitable for recording neural activity from the three targeted brainstem areas. Significance. The system offers a robust solution to provide long-term interface between an array of precisely defined microelectrodes and deep-brain areas of a behaving rodent. The microdrive allowed us to fine-tune the probe location and easily scan through the regions of interest.
Article 4 Reads 2 Citations Simultaneous in vivo recording of local brain temperature and electrophysiological signals with a novel neural probe Zoltan Fekete, Márton Csernai, Kinga Kocsis, Ágoston Csaba H... Published: 14 March 2017
Journal of Neural Engineering, doi: 10.1088/1741-2552/aa60b1
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Article 0 Reads 2 Citations Combined in vivo recording of neural signals and iontophoretic injection of pathway tracers using a hollow silicon micro... Z. Fekete, E. Pálfi, G. Márton, M. Handbauer, Zs. Bérces, I.... Published: 01 November 2016
Sensors and Actuators B: Chemical, doi: 10.1016/j.snb.2015.12.099
DOI See at publisher website