Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 19 of 19 for “"SSVEP"”.
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SSVEP-based BCI performance in children
… on the steady-state visually evoked potential (SSVEP). In our study, ten children (mean 9.9 years old) used an SSVEP-based BCI with a mean accuracy rate of 85.6% and a task completion rate of 97.5%. In contrast, a prior study of children (mean 9.8 years old) using an SSVEP-based BCI reported …
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An SSVEP Brain-Computer Interface: A Machine Learning Approach
… steady state visually evoked potentials (SSVEP), natural responses to visual stimulation at specific frequencies, has increasingly drawn attentions because of its high temporal resolution and minimal user training, which are two important parameters in evaluating a BCI system. The …
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Towards improved visual stimulus discrimination in an SSVEP BCI
… (SNR) of Steady State Visual Evoked Potentials (SSVEPs) with a view for use in Brain-Computer Interfaces (BCIs). It was hypothesised that the new spectral baseline processing method introduced here, termed the 'activity baseline', would result in an improved SNR.
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Examining Face Perception with Self-Reports and Neural Measures: An SSVEP study
… using steady-state visually evoked potentials (SSVEPs). It was then compared to the neural activity during object recognition. Participants with varying self-reported scores on the PI20 questionnaire (Twenty Item Prosopagnosia Index) took part in two SSVEP experimental tasks, one on visual face …
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A pilot study toward the development of ERD and SSVEP based hybrid brain computer interface
… (ERS) and steady-state visual evoked potentials (SSVEP). The aim of this project is to show the hBCI proposed works, to find where improvements can be made and to identify the synergies of SSVEP and ERD modalities. A duel task experiment was performed on 4 healthy subject, ages 22-35, in which …
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Stimulus intensity effects on the steady-state visual evoked potential
… of the steady-state visual evoked potential (SSVEP), a neural response to repetitive visual stimuli, is positively correlated with stimulus intensity. SSVEPs are often used as input mechanisms for brain-computer interfaces (BCIs), systems that establish a direct communication channel between …
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A distance adaptable brain-computer interface based on steady-state visual evoked potential
… P300 and steady-state visual evoked potential (SSVEP). Compared to the other EEG based BCI paradigms, SSVEP based BCI has the advantage of high information transfer rate, high detection rate, less user training time required and commands scalability. Furthermore, SSVEP based BCI is normally …
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Investigating Steady State Visually Evoked Potentials as a Novel Biosignature for Anxiety-Related Attention Bias
… The steady-state visually evoked potential (SSVEP), a measure of selective visual attention derived from EEG, holds promise as a biosignature for AB. Research documents heightened SSVEP power to emotionally salient stimuli such as threat faces among those with social anxiety; however, less is …
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A novel visual stimulation paradigm: exploiting individual primary visual cortex geometry to boost steady state visual evoked potentials (SSVEP)
<p>The steady-state visual evoked potential (SSVEP) is an electroencephalographic response to flickering stimuli generated in significant part by activity in primary visual cortex (V1). SSVEP signal-to-noise ratio is generally low for stimuli that are located in the visual periphery, at frequencies …
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A supervised machine-learning method for detecting steady-state visually evoked potentials for use in brain computer interfaces: A comparative assessment
… steady-state visually evoked potentials (SSVEP) by frequency of stimulation. Classification of SSVEPs by stimulus frequency has application in SSVEP-based brain computer interfaces (BCI), where users are presented with flashing stimuli and user intent is decoded by identifying which …
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Adaptation and Control State Detection Techniques for Brain-Computer Interfaces
… and steady-state visually evoked potentials (SSVEP) paradigms is also proposed. Information transfer is accomplished using P300 event related potential (ERP) paradigm and control state detection is achieved using SSVEP. The system is shown to achieve fast and accurate control state detection. …
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Investigation into Stand-alone Brain-computer Interfaces for Musical Applications
… called steady state visually evoked potential (SSVEP) to provide the user with control. It aims to encapsulate all braincomputer music interface (BCMI)-based operations into a stand-alone application, which would improve the portability of BCMIs. This projects addresses various engineering …
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Responsive IoT : using biosignals to connect humans and smart devices
… of Steady-State Visually Evoked Potentials (SSVEP) based Brain-Computer Interface (BCI). In this technology, brain-computer communication is triggered by imperceptible visual stimuli integrated in the virtual scene and subliminal information is seamlessly conveyed to a computer. By monitoring …
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EEG-based brain-computer interface for human-robot collaboration
… steady-state visually evoked potential (SSVEP) algorithm. We also conduct a study for passive BCI communication, i.e. the robot detects the circumstance when operators feel unsafe in the human-robot collaboration. When a fear response is detected, the robot can stop immediately to protect …
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Visual attention in naturalistic scenes across the lifespan.
… and steady state visually evoked potential (SSVEP). In this paradigm, participants overtly tracked a moving object and covertly monitored the appearance of a new object at the appearance point. I found a drop in the SSVEP power signal prior to the appearance of the second moving object while …
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Applications of sequential hypothesis testing to the development of non-invasive brain-computer interfaces
… use in a steady-state visual evoked potential (SSVEP)-based BCI. Instead of relying on a fixed window-length strategy—where a pre-specified amount of data is collected before classification is attempted—a sequential probability ratio test is used and data is collected until a confidence …
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Steady-state visual evoked potentials and their application to brain-computer interfaces
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-12-01
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Signal Processing Methods for Reliable Extraction of Neural Responses in Developmental EEG
Studying newborns in the first days of life prior to experiencing the world provides remarkable insights into the neurocognitive predispositions that humans are endowed with. First, it helps us to improve our current knowledge of the development of a typical brain. Secondly, it potentially opens …