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Chris Berka
University of California, San Diego
96Publications
15H-index
1,526Citations
Publications 96
Newest
Published on Jul 26, 2019 in INTERACT (International Conference on Human-Computer Interaction)
Greg Rupp , Chris Berka15
Estimated H-index: 15
+ 4 AuthorsAjay Verma9
Estimated H-index: 9
The co-acquisition of EEG in a virtual environment (VE) would give researchers and clinicians the opportunity to acquire EEG data with millisecond-level temporal resolution while participants performed VE activities. This study integrated Advanced Brain Monitoring’s (ABM) X-24t EEG hardware with the HTC Vive VR headset and investigated EEG differences in tasks delivered in two modalities: VE and a desktop computer.
Published on Jan 22, 2019in Journal of Alzheimer's Disease 3.70
Daniel J. Levendowski14
Estimated H-index: 14
,
Charlene E. Gamaldo18
Estimated H-index: 18
(JHUSOM: Johns Hopkins University School of Medicine)
+ 5 AuthorsChris Berka
Published on Jan 15, 2019in Frontiers in Human Neuroscience 2.87
Greg Rupp , Chris Berka15
Estimated H-index: 15
+ 7 AuthorsThomas D. Marcotte44
Estimated H-index: 44
(UCSD: University of California, San Diego)
The number of older drivers is steadily increasing, and advancing age is associated with a high rate of automobile crashes and fatalities. This can be attributed to a combination of factors including decline in sensory, motor, and cognitive functions due to natural ageing or neurodegenerative diseases such as HIV-Associated Neurocognitive Disorder (HAND). Current clinical assessment methods only modestly predict impaired driving. Thus, there is a need for inexpensive and scalable tools to predic...
Amir H. Meghdadi8
Estimated H-index: 8
,
Djordje Popovic11
Estimated H-index: 11
+ 3 AuthorsAjay Verma9
Estimated H-index: 9
Objective: To demonstrate the utility of rheoencephalography (REG) for measuring cerebral blood flow and fluid dynamics during different stages of sleep. Methods: Anteroposterior cranial electrical impedance was measured with concurrent polysomnography in a group of healthy subjects during sleep. Transcranial electrical impedance was characterized by measuring the peak-to-trough and envelope of the filtered pulsative REG signal as well as its frequency. The sensitivity of the REG amplitude to ch...
Published on Dec 1, 2018in Nature and Science of Sleep
Daniel J. Levendowski14
Estimated H-index: 14
,
Erik K. St. Louis22
Estimated H-index: 22
+ 3 AuthorsChris Berka15
Estimated H-index: 15
Published on Aug 3, 2017in Frontiers in Human Neuroscience 2.87
Elena Ratti1
Estimated H-index: 1
(Biogen Idec),
Shani Waninger2
Estimated H-index: 2
+ 2 AuthorsAjay Verma9
Estimated H-index: 9
(Biogen Idec)
Objectives: To compare quantitative EEG signal and test-retest reliability of medical grade and consumer EEG systems. Methods: Resting state EEG was acquired by two medical grade (B-Alert, Enobio) and two consumer (Muse, Mindwave) EEG systems in 5 healthy subjects during two study visits. EEG patterns, power spectral densities (PSDs) and test/retest reliability in eyes closed and eyes open conditions were compared across the four systems, focusing on Fp1, the only common electrode. Fp1 PSDs were...
Published on Jul 9, 2017 in INTERACT (International Conference on Human-Computer Interaction)
S. J. Smith , B. T. Stone + 3 AuthorsChris Berka15
Estimated H-index: 15
Technology continues to advance at exponential rates and we are exposed to a multitude of electronic interfaces in almost every aspect of our lives. In order to achieve seamless integration of both, human and technology, we must examine the objective and subjective responses to such interactions. The goal of this study was to examine neurophysiological responses to movement, communication, and usability with a robot assistant, in comparison to human assistant, in a real-world setting. OSHbot (ro...
Published on Apr 18, 2017in Neurology 8.69
Elena Ratti1
Estimated H-index: 1
(Biogen Idec),
Sebastian Von Rosenstiel (Biogen Idec)+ 3 AuthorsAjay Verma9
Estimated H-index: 9
(Biogen Idec)
Objective: To assess quantitative electroencephalography (EEG) as a potential disease biomarker for frontotemporal dementia (FTD) drug development. Background: Recent EEG analysis advances allow non-invasive quantitative evaluation of cortical activity that may detect neurodegeneration. FTD is a neurodegenerative disorder with selective vulnerability of fronto-temporal regions and which lacks established disease progression biomarkers. Previous use of quantitative EEG in FTD has been limited and...
Published on Jul 1, 2016in Alzheimers & Dementia 14.42
Shani Waninger2
Estimated H-index: 2
,
Seppo P. Ahlfors31
Estimated H-index: 31
(Harvard University)
+ 4 AuthorsAjay Verma9
Estimated H-index: 9
(Biogen Idec)
Published on Nov 26, 2015in Frontiers in Psychology 2.13
Bradly T. Stone3
Estimated H-index: 3
,
Kelly Correa1
Estimated H-index: 1
+ 4 AuthorsChris Berka15
Estimated H-index: 15
Impaired driving due to drug use is a growing problem, worldwide; estimates show that 18-23.5% of fatal accidents, and up to 34% of injury accidents may be caused by drivers under the influence of drugs (Drummer et al., 2003; NHTSA, 2010; Walsh et al., 2004). Furthermore, at any given time, up to 16% of drivers may be using drugs that can impair one’s driving abilities (NHTSA, 2009). Currently, drug recognition experts (law enforcement officers with specialized training to identify drugged drivi...
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