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Mehran Ganji
University of California, San Diego
9Publications
3H-index
42Citations
Publications 9
Newest
Published in Nano Letters 12.28
Mehran Ganji3
Estimated H-index: 3
(UCSD: University of California, San Diego),
Angelique C. Paulk15
Estimated H-index: 15
(Harvard University)
+ -3 AuthorsMichiko Shigyo (UCSD: University of California, San Diego)
Published on Feb 11, 2019in PLOS Computational Biology
Nicholas Rogers1
Estimated H-index: 1
(UCSD: University of California, San Diego),
John Hermiz3
Estimated H-index: 3
(UCSD: University of California, San Diego)
+ 11 AuthorsDavid Barba5
Estimated H-index: 5
(UCSD: University of California, San Diego)
Electrocorticography (ECoG) is becoming more prevalent due to improvements in fabrication and recording technology as well as its ease of implantation compared to intracortical electrophysiology, larger cortical coverage, and potential advantages for use in long term chronic implantation. Given the flexibility in the design of ECoG grids, which is only increasing, it remains an open question what geometry of the electrodes is optimal for an application. Conductive polymer, PEDOT:PSS, coated micr...
Published on Nov 1, 2018in Advanced Healthcare Materials 6.27
Mehran Ganji3
Estimated H-index: 3
(UCSD: University of California, San Diego),
Lorraine Hossain1
Estimated H-index: 1
(UCSD: University of California, San Diego)
+ 5 AuthorsShadi A. Dayeh31
Estimated H-index: 31
(UCSD: University of California, San Diego)
Published on Aug 1, 2018in NeuroImage 5.81
John Hermiz3
Estimated H-index: 3
(UCSD: University of California, San Diego),
Nicholas Rogers1
Estimated H-index: 1
(UCSD: University of California, San Diego)
+ 7 AuthorsVikash Gilja21
Estimated H-index: 21
(UCSD: University of California, San Diego)
Abstract Electrocorticography (ECoG), electrophysiological recording from the pial surface of the brain, is a critical measurement technique for clinical neurophysiology, basic neurophysiology studies, and demonstrates great promise for the development of neural prosthetic devices for assistive applications and the treatment of neurological disorders. Recent advances in device engineering are poised to enable orders of magnitude increase in the resolution of ECoG without comprised measurement qu...
Published on Mar 1, 2018in Advanced Functional Materials 15.62
Mehran Ganji3
Estimated H-index: 3
(UCSD: University of California, San Diego),
Erik Kaestner5
Estimated H-index: 5
(UCSD: University of California, San Diego)
+ 15 AuthorsGarth Rees Cosgrove2
Estimated H-index: 2
(Brigham and Women's Hospital)
Recording neural activity during neurosurgical interventions is an invaluable tool for both improving patient outcomes and advancing our understanding of neural mechanisms and organization. However, increasing clinical electrodes' signal-to-noise and spatial specificity requires overcoming substantial physical barriers due to the compromised metal electrochemical interface properties. The electrochemical properties of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) based inte...
Published on Nov 1, 2017in Advanced Functional Materials 15.62
Mehran Ganji3
Estimated H-index: 3
(UCSD: University of California, San Diego),
Ahmed T. Elthakeb2
Estimated H-index: 2
(UCSD: University of California, San Diego)
+ 3 AuthorsShadi A. Dayeh31
Estimated H-index: 31
(UCSD: University of California, San Diego)
Reduced contact size would permit higher resolution cortical recordings, but the effects of diameter on crucial recording and stimulation properties are poorly understood. Here, the first systematic study of scaling effects on the electrochemical properties of metallic Pt and Au and organic poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) electrodes is presented. PEDOT:PSS exhibits better faradaic charge transfer and capacitive charge coupling than metal electrodes, and these c...
Published on Nov 1, 2017in Advanced Functional Materials 15.62
Mehran Ganji3
Estimated H-index: 3
(UCSD: University of California, San Diego),
Atsunori Tanaka6
Estimated H-index: 6
(UCSD: University of California, San Diego)
+ 2 AuthorsShadi A. Dayeh31
Estimated H-index: 31
(UCSD: University of California, San Diego)
The efficacy of electrical brain stimulation in combatting neurodegenerative diseases and initiating function is expected to be significantly enhanced with the development of smaller scale microstimulation electrodes and refined stimulation protocols. These benefits cannot be realized without a thorough understanding of scaling effects on electrochemical charge injection characteristics. This study fabricates and characterizes the electrochemical stimulation capabilities of Au, Pt, poly(3,4-ethy...
Published on Apr 19, 2017in Proceedings of SPIE
Keundong Lee4
Estimated H-index: 4
(SNU: Seoul National University),
Mehran Ganji3
Estimated H-index: 3
(UCSD: University of California, San Diego)
+ 7 AuthorsShadi A. Dayeh31
Estimated H-index: 31
(UCSD: University of California, San Diego)
Electrocorticography (ECoG) is a powerful tool for direct mapping of local field potentials from the brain surface. Progress in development of high-fidelity materials such as poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) on thin conformal substrates such as parylene C enabled intimate contact with cortical surfaces and higher quality recordings from small volumes of neurons. Meanwhile, stimulation of neuronal activity is conventionally accomplished with electrical microstim...
Published on Dec 1, 2016in Advanced Healthcare Materials 6.27
Ilke Uguz9
Estimated H-index: 9
('ENS Paris': École Normale Supérieure),
Mehran Ganji3
Estimated H-index: 3
(UCSD: University of California, San Diego)
+ 9 AuthorsChristophe Bernard37
Estimated H-index: 37
(AMU: Aix-Marseille University)
Autoclaving, the most widely available sterilization method, is applied to poly(3,4-ethylenedioxythiophene) doped with polystyrene sulfonate (PEDOT:PSS) electrophysiology devices. The process does not harm morphology or electrical properties, while it effectively kills E. coli intentionally cultured on the devices. This finding paves the way to widespread introduction of PEDOT:PSS electrophysiology devices to the clinic.
Published on Aug 1, 2016 in EMBC (International Conference of the IEEE Engineering in Medicine and Biology Society)
John Hermiz3
Estimated H-index: 3
(UCSD: University of California, San Diego),
Nick Rogers2
Estimated H-index: 2
(UCSD: University of California, San Diego)
+ 7 AuthorsVikash Gilja21
Estimated H-index: 21
(UCSD: University of California, San Diego)
Open source electrophysiology (ephys) recording systems have several advantages over commercial systems such as customization and affordability enabling more researchers to conduct ephys experiments. Notable open source ephys systems include Open-Ephys, NeuroRighter and more recently Willow, all of which have high channel count (64+), scalability, and advanced software to develop on top of. However, little work has been done to build an open source ephys system that is clinic compatible, particu...
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