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Vikash Gilja
University of California, San Diego
64Publications
24H-index
2,230Citations
Publications 63
Newest
#1Angelique C. Paulk (Harvard University)H-Index: 16
#2Jae-Hyun Yang (Harvard University)H-Index: 1
Last.Sydney S. Cash (Harvard University)H-Index: 46
view all 29 authors...
Efforts to deepen our understanding of the nervous system depends on high resolution sampling of neuronal activity. We leveraged clinically necessary intracranial monitoring performed during surgical resections to record from the cortical surface (N=30) using high spatial resolution, low impedance PEDOT:PSS microelectrodes. We identified three classes of activity. The first included relatively fast repeated waveforms with kinetics similar to, but not perfectly matching, extracellular single unit...
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#1Mehran Ganji (UCSD: University of California, San Diego)H-Index: 4
#2Angelique C. Paulk (Harvard University)H-Index: 16
Last.Shadi A. Dayeh (UCSD: University of California, San Diego)
view all 25 authors...
The enhanced electrochemical activity of nanostructured materials is readily exploited in energy devices, but their utility in scalable and human-compatible implantable neural interfaces can significantly advance the performance of clinical and research electrodes. We utilize low-temperature selective dealloying to develop scalable and biocompatible one-dimensional platinum nanorod (PtNR) arrays that exhibit superb electrochemical properties at various length scales, stability, and biocompatibil...
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#1Paolo GabrielH-Index: 2
#2Kenny ChenH-Index: 1
Last.Vikash GiljaH-Index: 24
view all 14 authors...
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#1Nicholas Rogers (UCSD: University of California, San Diego)H-Index: 1
#2John Hermiz (UCSD: University of California, San Diego)H-Index: 3
Last.Vikash Gilja (UCSD: University of California, San Diego)H-Index: 24
view all 14 authors...
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...
1 CitationsSource
#1Abdulwahab Alasfour (UCSD: University of California, San Diego)H-Index: 1
#2Paolo Gabriel (UCSD: University of California, San Diego)H-Index: 2
Last.Vikash Gilja (UCSD: University of California, San Diego)H-Index: 24
view all 15 authors...
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#1Tejaswy Pailla (UCSD: University of California, San Diego)H-Index: 2
#2Kai J. Miller (Stanford University)H-Index: 40
Last.Vikash Gilja (UCSD: University of California, San Diego)H-Index: 24
view all 3 authors...
1 CitationsSource
#1Alfredo Lucas (UCSD: University of California, San Diego)H-Index: 1
#2John Hermiz (UCSD: University of California, San Diego)H-Index: 3
Last.Vikash Gilja (UCSD: University of California, San Diego)H-Index: 24
view all 6 authors...
Stroke patients are monitored hourly by physicians and nurses in an attempt to better understand their physical state. To quantify the patients’ level of mobility, hourly movement (i.e. motor) assessment scores are performed, which can be taxing and time-consuming for nurses and physicians. In this paper, we attempt to find a correlation between patient motor scores and continuous accelerometer data recorded in subjects who are unilaterally impaired due to stroke. The accelerometers were placed ...
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#1Mehran Ganji (UCSD: University of California, San Diego)H-Index: 4
#2Lorraine Hossain (UCSD: University of California, San Diego)H-Index: 1
Last.Shadi A. Dayeh (UCSD: University of California, San Diego)H-Index: 32
view all 8 authors...
1 CitationsSource
#1John Hermiz (UCSD: University of California, San Diego)H-Index: 3
#2Nicholas Rogers (UCSD: University of California, San Diego)H-Index: 1
Last.Vikash Gilja (UCSD: University of California, San Diego)H-Index: 24
view all 10 authors...
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...
4 CitationsSource
#1Mehran Ganji (UCSD: University of California, San Diego)H-Index: 4
#2Erik Kaestner (UCSD: University of California, San Diego)H-Index: 5
Last.Shadi A. Dayeh (UCSD: University of California, San Diego)H-Index: 32
view all 18 authors...
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...
16 CitationsSource
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