621 research outputs found
Excuse Me, Do I Know You From Somewhere? Unaware Facial Recognition Using Brain-Computer Interfaces
While a great deal of research has been done on \ the human brain’s reaction to seeing faces and \ reaction to recognition of these faces, the unaware \ recognition of faces is an area where further research \ can be conducted and contributed to. We performed a \ preliminary experiment where participants viewed \ images of faces of individuals while we recorded their \ EEG signals using a consumer-grade BCI headset. \ Pre-selection of the images used in each of the three \ phases in the experiment allowed us to tag each image \ based on what state of recognition we expect the image \ to take – No Recognition, a Possible Unaware \ Recognition, and a Possible Aware Recognition. We \ find, after filtering, artifact removal, and analysis of \ the participants’ EEG signals recorded from a \ consumer-grade BCI headset, obvious differences \ between the three classes of recognition (as defined \ above) and, more specifically, unaware recognitions, \ can be easily identified
A Framework for Preserving Privacy and Cybersecurity in Brain-Computer Interfacing Applications
Brain-Computer Interfaces (BCIs) comprise a rapidly evolving field of
technology with the potential of far-reaching impact in domains ranging from
medical over industrial to artistic, gaming, and military. Today, these
emerging BCI applications are typically still at early technology readiness
levels, but because BCIs create novel, technical communication channels for the
human brain, they have raised privacy and security concerns. To mitigate such
risks, a large body of countermeasures has been proposed in the literature, but
a general framework is lacking which would describe how privacy and security of
BCI applications can be protected by design, i.e., already as an integral part
of the early BCI design process, in a systematic manner, and allowing suitable
depth of analysis for different contexts such as commercial BCI product
development vs. academic research and lab prototypes. Here we propose the
adoption of recent systems-engineering methodologies for privacy threat
modeling, risk assessment, and privacy engineering to the BCI field. These
methodologies address privacy and security concerns in a more systematic and
holistic way than previous approaches, and provide reusable patterns on how to
move from principles to actions. We apply these methodologies to BCI and data
flows and derive a generic, extensible, and actionable framework for
brain-privacy-preserving cybersecurity in BCI applications. This framework is
designed for flexible application to the wide range of current and future BCI
applications. We also propose a range of novel privacy-by-design features for
BCIs, with an emphasis on features promoting BCI transparency as a prerequisite
for informational self-determination of BCI users, as well as design features
for ensuring BCI user autonomy. We anticipate that our framework will
contribute to the development of privacy-respecting, trustworthy BCI
technologies
Wireless Sensors for Brain Activity — A Survey
Over the last decade, the area of electroencephalography (EEG) witnessed a progressive move from high-end large measurement devices, relying on accurate construction and providing high sensitivity, to miniature hardware, more specifically wireless wearable EEG devices. While accurate, traditional EEG systems need a complex structure and long periods of application time, unwittingly causing discomfort and distress on the users. Given their size and price, aside from their lower sensitivity and narrower spectrum band(s), wearable EEG devices may be used regularly by individuals for continuous collection of user data from non-medical environments. This allows their usage for diverse, nontraditional, non-medical applications, including cognition, BCI, education, and gaming. Given the reduced need for standardization or accuracy, the area remains a rather incipient one, mostly driven by the emergence of new devices that represent the critical link of the innovation chain. In this context, the aim of this study is to provide a holistic assessment of the consumer-grade EEG devices for cognition, BCI, education, and gaming, based on the existing products, the success of their underlying technologies, as benchmarked by the undertaken studies, and their integration with current applications across the four areas. Beyond establishing a reference point, this review also provides the critical and necessary systematic guidance for non-medical EEG research and development efforts at the start of their investigation
Wireless Sensors for Brain Activity—A Survey
Over the last decade, the area of electroencephalography (EEG) witnessed a progressive move from high-end large measurement devices, relying on accurate construction and providing high sensitivity, to miniature hardware, more specifically wireless wearable EEG devices. While accurate, traditional EEG systems need a complex structure and long periods of application time, unwittingly causing discomfort and distress on the users. Given their size and price, aside from their lower sensitivity and narrower spectrum band(s), wearable EEG devices may be used regularly by individuals for continuous collection of user data from non-medical environments. This allows their usage for diverse, nontraditional, non-medical applications, including cognition, BCI, education, and gaming. Given the reduced need for standardization or accuracy, the area remains a rather incipient one, mostly driven by the emergence of new devices that represent the critical link of the innovation chain. In this context, the aim of this study is to provide a holistic assessment of the consumer-grade EEG devices for cognition, BCI, education, and gaming, based on the existing products, the success of their underlying technologies, as benchmarked by the undertaken studies, and their integration with current applications across the four areas. Beyond establishing a reference point, this review also provides the critical and necessary systematic guidance for non-medical EEG research and development efforts at the start of their investigation.</jats:p
Emerging ExG-based NUI Inputs in Extended Realities : A Bottom-up Survey
Incremental and quantitative improvements of two-way interactions with extended realities (XR) are contributing toward a qualitative leap into a state of XR ecosystems being efficient, user-friendly, and widely adopted. However, there are multiple barriers on the way toward the omnipresence of XR; among them are the following: computational and power limitations of portable hardware, social acceptance of novel interaction protocols, and usability and efficiency of interfaces. In this article, we overview and analyse novel natural user interfaces based on sensing electrical bio-signals that can be leveraged to tackle the challenges of XR input interactions. Electroencephalography-based brain-machine interfaces that enable thought-only hands-free interaction, myoelectric input methods that track body gestures employing electromyography, and gaze-tracking electrooculography input interfaces are the examples of electrical bio-signal sensing technologies united under a collective concept of ExG. ExG signal acquisition modalities provide a way to interact with computing systems using natural intuitive actions enriching interactions with XR. This survey will provide a bottom-up overview starting from (i) underlying biological aspects and signal acquisition techniques, (ii) ExG hardware solutions, (iii) ExG-enabled applications, (iv) discussion on social acceptance of such applications and technologies, as well as (v) research challenges, application directions, and open problems; evidencing the benefits that ExG-based Natural User Interfaces inputs can introduceto the areaof XR.Peer reviewe
Emerging ExG-based NUI Inputs in Extended Realities : A Bottom-up Survey
Incremental and quantitative improvements of two-way interactions with extended realities (XR) are contributing toward a qualitative leap into a state of XR ecosystems being efficient, user-friendly, and widely adopted. However, there are multiple barriers on the way toward the omnipresence of XR; among them are the following: computational and power limitations of portable hardware, social acceptance of novel interaction protocols, and usability and efficiency of interfaces. In this article, we overview and analyse novel natural user interfaces based on sensing electrical bio-signals that can be leveraged to tackle the challenges of XR input interactions. Electroencephalography-based brain-machine interfaces that enable thought-only hands-free interaction, myoelectric input methods that track body gestures employing electromyography, and gaze-tracking electrooculography input interfaces are the examples of electrical bio-signal sensing technologies united under a collective concept of ExG. ExG signal acquisition modalities provide a way to interact with computing systems using natural intuitive actions enriching interactions with XR. This survey will provide a bottom-up overview starting from (i) underlying biological aspects and signal acquisition techniques, (ii) ExG hardware solutions, (iii) ExG-enabled applications, (iv) discussion on social acceptance of such applications and technologies, as well as (v) research challenges, application directions, and open problems; evidencing the benefits that ExG-based Natural User Interfaces inputs can introduceto the areaof XR.Peer reviewe
Brain-Computer Interfaces for Non-clinical (Home, Sports, Art, Entertainment, Education, Well-being) Applications
HCI researchers interest in BCI is increasing because the technology industry is expanding into application areas where efficiency is not the main goal of concern. Domestic or public space use of information and communication technology raise awareness of the importance of affect, comfort, family, community, or playfulness, rather than efficiency. Therefore, in addition to non-clinical BCI applications that require efficiency and precision, this Research Topic also addresses the use of BCI for various types of domestic, entertainment, educational, sports, and well-being applications. These applications can relate to an individual user as well as to multiple cooperating or competing users. We also see a renewed interest of artists to make use of such devices to design interactive art installations that know about the brain activity of an individual user or the collective brain activity of a group of users, for example, an audience. Hence, this Research Topic also addresses how BCI technology influences artistic creation and practice, and the use of BCI technology to manipulate and control sound, video, and virtual and augmented reality (VR/AR)
Análise do testemunho ocular utilizando sinais de eletroencefalograma
The application of Brain Computer Interfaces techniques to vital crime witnesses
could and probably will be a key feature in the justice system.
Features from the electroencephalogram signals were extracted with information
detailing their domain (time or frequency), and their spacial scalp and
time placement. For both domains, two different classification pipelines were
applied in order to select the most relevant features: one to rank and select
the top features and another to recursively eliminate the least relevant feature.
The Support Vector Machine (linear and non-linear) is the classification model
included in the pipeline.
Further observations on the selected features by the applied techniques were
performed and discussed in relation to the available knowledge about face
recognition.
The present work provides an experimental study on the electroencephalogram
signals acquired from an experiment in which an array of subjects were
asked to identify both culprit and distractor being the culprit related to a previously
shown crime scene video.A aplicação de técnicas de Interfaces Cérebro-Computador a testemunhas
vitais de um crime pode e provavelmente será uma funcionalidade chave no
sistema de justiça.
Características de sinais provenientes de eletroencefalograma foram extraídas
com informações sobre o seu domínio (tempo ou frequência), e a sua
localização espacial e temporal. Para ambos os domínios, dois modelos de
classificação diferentes foram aplicados com vista a selecionar as características
mais relevantes: um para classificar, ordenar e selecionar as características
mais importantes e outro para eliminar recursivamente a característica
menos relevante. O modelo utilizado para classificação foi o Support Vector
Machine (linear e não linear).
Outras observações sobre as características selecionadas pelas técnicas aplicadas
foram realizadas e discutidas tendo em conta o conhecimento disponível
sobre reconhecimento facial.
O presente trabalho fornece um estudo experimental sobre os sinais de eletroencefalograma
adquiridos numa experiência na qual foi pedido a um grupo de
indivíduos para identificar tanto culpado como distrator, sendo que o culpado
estava relacionado a um vídeo de cenário de crime mostrado anteriormente.Mestrado em Engenharia de Computadores e Telemátic
Sensing with Earables: A Systematic Literature Review and Taxonomy of Phenomena
Earables have emerged as a unique platform for ubiquitous computing by augmenting ear-worn devices with state-of-the-art sensing. This new platform has spurred a wealth of new research exploring what can be detected on a wearable, small form factor. As a sensing platform, the ears are less susceptible to motion artifacts and are located in close proximity to a number of important anatomical structures including the brain, blood vessels, and facial muscles which reveal a wealth of information. They can be easily reached by the hands and the ear canal itself is affected by mouth, face, and head movements. We have conducted a systematic literature review of 271 earable publications from the ACM and IEEE libraries. These were synthesized into an open-ended taxonomy of 47 different phenomena that can be sensed in, on, or around the ear. Through analysis, we identify 13 fundamental phenomena from which all other phenomena can be derived, and discuss the different sensors and sensing principles used to detect them. We comprehensively review the phenomena in four main areas of (i) physiological monitoring and health, (ii) movement and activity, (iii) interaction, and (iv) authentication and identification. This breadth highlights the potential that earables have to offer as a ubiquitous, general-purpose platform
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