Results 261 to 270 of about 35,696 (286)
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Biomedizinische Technik, 2010
Brain-computer interfaces (BCIs) based on steady-state visual evoked potentials (SSVEPs) require minimal user training and can offer higher information throughput compared to other BCI modalities. We focused on SSVEPs elicited by high-frequency stimuli (>30 Hz) because they cause minimal fatigue/annoyance and reduce the risk of inducing photoepileptic ...
Gary Garcia, Molina, Vojkan, Mihajlovic
exaly +3 more sources
Brain-computer interfaces (BCIs) based on steady-state visual evoked potentials (SSVEPs) require minimal user training and can offer higher information throughput compared to other BCI modalities. We focused on SSVEPs elicited by high-frequency stimuli (>30 Hz) because they cause minimal fatigue/annoyance and reduce the risk of inducing photoepileptic ...
Gary Garcia, Molina, Vojkan, Mihajlovic
exaly +3 more sources
Journal of Neuroscience Methods, 2015
Steady-state visual evoked potentials (SSVEPs) are widely used for brain-computer interfaces. However, users experience fatigue due to exposure to flickering stimuli. High-frequency stimulation has been proposed to reduce this problem. We adapt frequency-modulated (FM) stimulation from the auditory domain, where it is commonly used to evoke steady ...
Alexander M Dreyer, Christoph S Herrmann
exaly +3 more sources
Steady-state visual evoked potentials (SSVEPs) are widely used for brain-computer interfaces. However, users experience fatigue due to exposure to flickering stimuli. High-frequency stimulation has been proposed to reduce this problem. We adapt frequency-modulated (FM) stimulation from the auditory domain, where it is commonly used to evoke steady ...
Alexander M Dreyer, Christoph S Herrmann
exaly +3 more sources
Cognitive Processing, 2022
Evidence suggests that the visual evoked potential (VEP) and gamma oscillations elicited by visual stimuli reflect the balance of excitatory and inhibitory (E-I) cortical processes. As tDCS has been shown to modulate E-I balance, the current study investigated whether amplitudes of VEP components (N1 and P2) and peak gamma frequency are modulated by ...
Abdullah Bin Dawood +4 more
openaire +2 more sources
Evidence suggests that the visual evoked potential (VEP) and gamma oscillations elicited by visual stimuli reflect the balance of excitatory and inhibitory (E-I) cortical processes. As tDCS has been shown to modulate E-I balance, the current study investigated whether amplitudes of VEP components (N1 and P2) and peak gamma frequency are modulated by ...
Abdullah Bin Dawood +4 more
openaire +2 more sources
STIMULATION FREQUENCY AND VISUALLY EVOKED SCALP POTENTIALS WITH BRIEF FLASHES OF LIGHT
Acta Neurologica Scandinavica, 2009Recording of the visually evoked scalp potential (VESP) elicited with flash stimulation was completed in six subjects presenting with normal vision. From the four separate signals recorded over the visual cortex, it was concluded that stimulation frequency affects some of the components of the VESP.
B C, Bradley, E, Pedersen
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Journal of Neural Engineering, 2019
Abstract Objective . A visual stimulator plays a vital part in brain–computer interfaces (BCIs) based on steady-state visual evoked potential (SSVEP). The properties of visual stimulation, such as frequency, color, and waveform, will influence SSVEP-based BCI performance to some extent ...
Xiaogang Chen +4 more
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Abstract Objective . A visual stimulator plays a vital part in brain–computer interfaces (BCIs) based on steady-state visual evoked potential (SSVEP). The properties of visual stimulation, such as frequency, color, and waveform, will influence SSVEP-based BCI performance to some extent ...
Xiaogang Chen +4 more
openaire +2 more sources
2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), 2013
In an attempt to develop safe and robust methods for monitoring migraineurs' brain states, we explores the feasibility of using white, red, green and blue LED lights flickering around their critical flicker fusion (CFF) frequencies as foveal visual stimuli for inducing steady-state visual evoked potentials (SSVEP) and causing discernible habituation ...
Heng-Yuan Kuo +15 more
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In an attempt to develop safe and robust methods for monitoring migraineurs' brain states, we explores the feasibility of using white, red, green and blue LED lights flickering around their critical flicker fusion (CFF) frequencies as foveal visual stimuli for inducing steady-state visual evoked potentials (SSVEP) and causing discernible habituation ...
Heng-Yuan Kuo +15 more
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A novel flash visual evoked potential stimulator utilizing linear frequency modulation
2013 ICME International Conference on Complex Medical Engineering, 2013This paper provides a parameter controllable visual evoked potential stimulator device for brain-computer interface, which can generate multichannel linear frequency modulation signal in real time. The device consists of host computer, FPGA board and LED board.
null Saili Peng +3 more
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Electroencephalography and Clinical Neurophysiology, 1982
VEPs were elicited by sinusoidal grating patterns of differing spatial frequencies presented in each of the 4 quadrants of the visual field. Analysis of the early wave of the VEP indicated a pattern of polarity inversions when wave forms were compared across the horizontal meridian of the visual field.
D M, Parker, E A, Salzen, J R, Lishman
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VEPs were elicited by sinusoidal grating patterns of differing spatial frequencies presented in each of the 4 quadrants of the visual field. Analysis of the early wave of the VEP indicated a pattern of polarity inversions when wave forms were compared across the horizontal meridian of the visual field.
D M, Parker, E A, Salzen, J R, Lishman
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Behavioural Brain Research, 2002
Visual evoked potentials (VEP) responses to flash stimulation at nine intensities, from 0.611 to 945.6 cd/m(2)*s, and two frequencies (0.2 and 1 Hz) were recorded and oscillatory potentials (OPs) extracted after digital 50-Hz high pass filtering in unanaesthetized unrestrained mice.
Luisa, Lopez +6 more
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Visual evoked potentials (VEP) responses to flash stimulation at nine intensities, from 0.611 to 945.6 cd/m(2)*s, and two frequencies (0.2 and 1 Hz) were recorded and oscillatory potentials (OPs) extracted after digital 50-Hz high pass filtering in unanaesthetized unrestrained mice.
Luisa, Lopez +6 more
openaire +2 more sources
1981
Numerous studies on psychophysical reaction times in man in response to pattern stimulation demonstrate a progressive increase in the latency of the response when the spatial frequency of the stimulus is increased. A similar behaviour has been recently observed with the use of evoked potentials. In this particular study the Authors demonstrate that the
V. Porciatti, G. P. Von Berger
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Numerous studies on psychophysical reaction times in man in response to pattern stimulation demonstrate a progressive increase in the latency of the response when the spatial frequency of the stimulus is increased. A similar behaviour has been recently observed with the use of evoked potentials. In this particular study the Authors demonstrate that the
V. Porciatti, G. P. Von Berger
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