BCI by Electrical Cortex Activity: Challenges in Creating a Cognitive System for Mobile Devices Using SSVEP

Conference: DoCEIS2016 - Technological Innovation for Cyber-Physical Systems, Portugal
Book Title: Technological Innovation for Cyber-Physical Systems
DOI: 10.1007/978-3-319-31165-4_14

Abstract: The research field of Brain-Computer Interfaces (BCI) emerged in an attempt to enable communication between paralyzed patients and technology. Identifying an individual’s mental state, through his brain’s electric activity, a typical BCI system assigns to it a particular action in the computer. It is known that when the visual cortex is stimulated with a certain frequency, it shows activity with the same frequency. This Steady-State Visually Evoked Potential (SSVEP) activity can be used to achieve the aforementioned communication goal. In this work, we first analyze the spontaneous electrical activity of the brain, to distinguish two mental sates (concentration / meditation). Then, following an SSVEP type of approach, we divide the stimulating screen in four areas, each of which flickering at a distinct frequency. By observing the responding frequency from the occipital lobe of the subject, we can then estimate the 2 bit decision he made. We observe that such a setup is efficient for real time BCI, and can be easily integrated in mobile devices. Besides, the user is able to change voluntarily her/his decisions, interacting with the system in a natural manner.

For more information click here.

NeuroTechNix Conference, November 2016 - Porto, Portugal

This congress will be a meeting point of multidisciplinary teams, of both biomedical and engineering professionals, academics and practitioners. It will promote translational discussions on how technology can meet the needs of both clinical practitioners and persons with neurological disorders.

Early basic registration fees range between 475€ for Member of INSTICC (no lunches included) and 595€ - Non member, with lunches included.

Important Dates

• Complete Paper Submission: May 26, 2016 
• Extended Abstracts: July 4, 2016 

For more informations press here.

19th International Conference on Cognitive Neuroscience - Paris

This Conference, between 23 and 24 January - 2017, aims to bring together scientists and researchers to exchange and share their experiences and results about all aspects of Cognitive Neuroscience including BCI and EEG. 

It also provides the premier interdisciplinary forum for researchers, practitioners and educators to present and discuss the most recent innovations, trends, and concerns, practical challenges encountered and the solutions adopted in the field of Cognitive Neuroscience.

Paper Submission Deadline is July 23, 2016

More informations press here.

NeuroBB - Forum BCI

The NeuroBB is a EEG/BCI/Neurofeedback Forum where it is possible to discuss and exchange ideas about Brain-Computer Interfaces.

For more information about BCI/EEG press here.

Control your Dreams with Aurora Headband

"Have a Lucid Dream!" - This is the new concept of the iWinks company from San Diego, USA. With this system is possible to know you are dreaming, after wakeup remember the dreams or just explore the subconscious.

Features

• Dream Sounds: Direct your dreams! Smartphone sounds set your dream mood;
• Comfort: Aurora’s hypoallergenic construction and plush silver sensors;
• Alarm Clock: Simply set your desired wake-up period;
• Clinic-Proven: Sleep tracking algorithm learns your sleep stages;
• Connected: Bluetooth Low Energy onboard;
• Future-Proof: Open SDK empowers researchers to find new uses;
• Open Sleep Research Platform: Aurora empowers developers to explore sleep and brain-computer-interface (BCI) research by leveraging our research-grade sensors.

I'm a little concerned about the presentation of this product and all its features but we will wait for the results. For more informations press here.

Brain Products - Jobs and EEG & Eye Tracking

The company Brain Products from Germany as a new study on combining EEG & Eye Tracking about the Neuroscience of Implicit Moral Evaluation and Its Relation to Generosity in Early Childhood. Watch the next 3 minutes video.

They are also looking for a position to Scientific Consultant (Neuroscience research applications). The Brain Products headquarters in Gilching (near Munich/Germany) needs your experience and creativity to strengthen the Scientific Support team. Brain Products is the global player for a vast variety of scientific applications in the context of electroencephalography.

Responsabilities:

• Support of end users in applying signal processing methods
• Development of training and instruction material
• Compilation of user feedback for product improvements 
• User workshop preparation
• Company representation at international conferences

More informations can be found here.

BCI Jobs - PhD and PostDoc Positions at Graz BCI Lab

A PostDoc position is available at the Institute of Neural Engineering, Graz-BCI Lab, Austria.

We are looking for a person with a PhD in information & computer engineering, computer science, biomedical engineering, or neuroscience with experience and background in the following fields: EEG, neuroscience, biosignal processing, machine learning, brain-computer interfaces, motor neuroprosthetics, feedback, functional brain mapping but also skills in managing a project and supervising students.

Monthly remuneration € 3.590,70 gross (14× per annum), starting at May 1 2016.

There are also, not one but, several PhD positions available.

We are looking for a person with a MSc or Dipl.-Ing. in information & computer engineering, computer science, biomedical engineering, with experience/background in some of the following fields: EEG, neuroscience, biosignal processing, machine learning, brain-computer interfaces, motor neuroprosthetics, functional brain mapping. 

Monthly remuneration € 2.696,50 x 14 gross (14× per annum), starting at May 1 2016.


More information about this Jobs can be found on the website:http://bci.tugraz.at/

50.000 PageViews

More than 50.000 page views to this blog!!!

Mint Labs - A Google Maps Solution for the Brain

Mint Labs is a new company based on a cloud platform, created by Paulo Rodrigues, who wants to affirm itself as a "Google Maps for the brain" solution.

We have developed complex mathematical algorithms to de-noise and enhance MRI images while preserving the important structural information in them. These algorithms are kept in our servers, hosted with Google Cloud Engine. We use Leap Motion as an intuitive form of interaction with this 3D maps. This gives the advantage of allowing the doctor to interact and visualize patient images right at point of care, at the operating room. 

Main Features:

• Storage - Store your imaging data with flexible billing, without hardware, support and any maintenance costs.
• Processing - Unlike the “do-it-yourself” approach with costly upfront outlay and months of implementation, Mint Labs allows you to automatically apply processing apps, and just pay for what you use.
• Sharing - Partners around the world can share datasets securely in one place with permissions-based controls.
• Scientific Consulting - Have our imaging, visualization, computational neuroscience and cloud security expertise at your disposal. Accelerate your path to neuroimaging today.

It is certainly an excellent idea in an innovative way to provide quick and easy access to process this type of "brain data". A genuine Royal idea. :-)

For more information press here.

World Academy of Science, Engineering and Technology

The following image appears to have been taken from a travel agency but is not. It is the World Academy of Science, Engineering and Technology with an extensive conferences program worldwide.

More information here.

Sleep well with Kokoon EEG headphones

Kokoon is a new EEG system using integrated headphones that responds with audio improving sleep quality, remove disruptions and protect regenerative deep sleep.

Pre-orders to "Wake restored" are available with a price of $229.

NeuroPro - Innovative EEG Low-cost Solution

NeuroPro is a Swiss Medical Company that focus their research to provide technologies for patients suffering from neurological conditions and to support the advancement of neurological research and treatment, as epilepsy.

More information here. (the web site is very slow)

Present your EEG Application ideas to the World

Do you have an idea to create a new EEG application? Consciousness Hacking are a global community to explore and present your ideas with a supportive group that helps you to bring them to reality. 

Consumer EEG headsets are beginning to enter the market enabling inexpensive access to brainwave activity. Self-tracking biometric and biomechanical technologies capable of measuring signals such as pulse, skin conductivity, muscle tension, breath analysis, heart rate variability and or physical movement are becoming readily available as viable commercial products.

Computation is no longer a limiting factor, and massive amounts of data can be scoured for patterns no human mind could identify (...). Neuroscience research is beginning to deeply explore the nature of not only meditation, but of mystical and enlightened states. And these examples are just the tip of the iceberg.

More information here.

Detecting errors in the actions of others: An EEG study in pianists, musicians and musically naïve people

M.S. Panasiti, E.F. Pavone and S.M. Aglioti from the Department of Psychology, University of Rome “La Sapienza” - Italy, wrote this new article "Electrocortical signatures of detecting errors in the actions of others: An EEG study in pianists, musicians and musically naïve people" that uses EEG to explored the link between sensorimotor expertise and the ability to detect another’s erroneous action.

Detecting others’ action errors plays a critical role in social life. Studies indicate that executing action errors and observing other’s errors activate a specific cerebral system specialized for performance monitoring and detecting mismatches between an internal model of the action and the executed/observed one. Such a system may be particularly important for highly skilled performance. By recording EEG in expert pianists, non-pianist musicians and musically naïve individuals while they observed correct or incorrect mute piano sequences. Superior error detection in pianists was paralleled by a larger Pe, hinting at the selective activation of the parietal error-monitoring system in visuo-motor experts. Moreover, only in pianists did action observation induce left lateralized mu suppression in the 10–12 Hz band, reflecting somatotopic sensorimotor simulation.(...) This study shows that specific electrocortical indices link motor simulation and detection of errors in the actions of others.

Topics of Interest

• Error detection in motor experts is paralleled by Pe over parietal electrodes;
• Observing domain-specific actions induce lateralized mu suppression in pianist;.
• Motor simulation improves sensitivity to errors which in turn improves detection.

More information about BCI/EEG press here.

Identifying Stable Patterns over Time for Emotion Recognition from EEG

Wei-Long Zheng, Jia-Yi Zhu, and Bao-Liang Lu, from Shanghai Jiao Tong University, recently published the paper "Identifying Stable Patterns over Time for Emotion Recognition from EEG" using a machine learning approach.

(...), we focus on identifying EEG stability in emotion recognition. (...) The experimental results indicate that stable patterns exhibit consistency across sessions; the lateral temporal areas activate more for positive emotion than negative one in beta and gamma bands; the neural patterns of neutral emotion have higher alpha responses at parietal and occipital sites; and for negative emotion, the neural patterns have significant higher delta responses at parietal and occipital sites and higher gamma responses at prefrontal sites. The performance of our emotion recognition system shows that the neural patterns are relatively stable within and between sessions.

For more information about BCI/EEG press here.

Advanced Topics in Brain-Computer Interfacing

A new BCI book from Landon Vaden, it is available for reading from December 24 - 2015.

Research on brain-computer interfacing began in the 1970s at the University of California, Los Angeles under a grant from the National Science Foundation, followed by a contract from DARPA. The papers published after this research also mark the first appearance of the expression brain–computer interface in scientific literature.

With a price of $59 is also available here.

BrainLink - EEG Headband

BrainLink is a new EEG headband, made in China from Macrotellect, with a price of 255€. Developed primarily for fitness control, relax or increase focus, this equipment presents its core functions as:

• Focus Training with Brainwave Reports
• Meditation and Pressure Relief 
• Play Games.

BrainLink is a portable mental fitness headband wearable which helps you to maintain and achieve your peak mental fitness at your own pace. Brainwave sensing technology used in the wearable allows you to see and manage the progress of your mental fitness goals.

More informations here.

Real-time Neuroimaging and Cognitive Monitoring using Wearable Dry EEG

The researchers from the University of California, San Diego,  have developed a new EEG system with 64-channels to interpret and analyse the electrical brain activity using P300.

"We will be able to prompt the brain to fix its own problems," said Gert Cauwenberghs, a bioengineering professor at the Jacobs School and a principal investigator of the research. "We are trying to get away from invasive technologies, such as deep brain stimulation and prescription medications, and instead start up a repair process by using the brain's synaptic plasticity."

The article "Real-time neuroimaging and cognitive monitoring using wearable dry EEG" is available here.

DoCEIS 2016 - Advanced Doctoral Conference on Computing, Electrical and Industrial Systems

During April, 11-13, 2016, DoCEIS’16 will provide in Lisbon - Portugal a platform for the presentation of research results coming out of the PhD works, PhD thesis plans and practical aspects of a PhD work.

The 7th Advanced Doctoral Conference on Computing, Electrical and Industrial Systems (DoCEIS’16) will reflect on the growing interests in research, development and application of Cyber-Physical Systems. Fast progress on embedded intelligence and interconnection of systems, enabled by advances in pervasive computing, sensing technologies, and computer networks, including developments on Internet of Things and Cloud Computing, lead to new architectural approaches to systems engineering.

Sponsors:

More informations here.

AREADNE 2016 - Research of Neural Ensembles

In 22-26 June will be held the conference AREADNE 2016 in Greece. One of the proposed aims is to understand how the activation of large networks of neurons gives rise to the higher order functions of the brain including learning, memory, cognition, perception, action and ultimately conscious awareness. 

There are three major goals of the AREADNE Conferences. First and foremost, the meetings are intended to gather global scientific leaders who work on neural ensembles and create a touch-point for a widely disparate and hybrid field. Second, with a spectacular setting on Santorini, the conferences have been carefully planned to foster discussion and interaction between attendees to encourage the establishment of lasting professional relationships. Third, these meetings continue our efforts to promote systems neuroscience in Greece through creating a world-class forum for cutting-edge research.

Important Dates

• 2016-01-06 Abstract submissions open
• 2016-02-12 Abstract submissions close
• 2016-03-15 Abstract notifications sent

More informations here.

4th International Winter Conference on BCI

The 4th International Winter Conference on BCI in Korea, 22-24 February 2016, aims to encourage overview, in-depth talks and discussions, on the latest research of BCI. 

Its devotion includes invasive recording, semi-invasive ECoG, non-invasive EEG, non-invasive NIRS and fMRI measurement and potential combinations of the different methods furthermore advances in data analysis. Informal open discussion will be highly encouraged during its poster session.

Topics of Interest

• Novel BCI paradigms to elicit and collect data in different settings;
• Methods for the identification of mental status for BCI;
• Novel ideas for the combination of different mental strategies;
• Innovative theories or methodologies for user- or environment-adaptive BCIs;
• Advanced machine learning techniques for bio-signal processing and classification;
• Novel ideas and methodologies for multi-modal BCI;
• Novel methods or concepts for neurofeedback;
• Ideas for the advancement of BCI through open source collaboration;
• Applications of BCI including games, neuro-rehabilitation, control, virtual reality, etc.

More informations here.

Brain-Computer Interface Society

The new BCI Society was created to foster research leading to technologies that enable people to interact with the world through brain signals. 

It will work with other BCI-related organizations, sharing research and organize meetings among other activities. Jonathan Wolpaw and Nick Ramsey are the President and Vice-President of this society. The official site will also have information about Events, Jobs, Announcements. 

If you have interest compete for a BCI SOCIETY logo contest until 15 February 2016. More information here.

Happy New 2016

From Lisbon to worldwide wish for a happy 2016 to all researchers and BCI enthusiasts!

Photograph taken next to the River Tagus, Parque das Nações, Lisbon, Portugal. 

Author: José Boldt

Patient Plays a Musical Instrument While Brain Tumour Removed

A team of neurosurgeons at a Spain hospital successfully removed a brain tumour while the patient was conscious and playing saxophone. With this approach it was possible to operate without damaging the part of the brain involved in musical language.

Aguilera, who was told he had a brain tumour after suffering dizzy spells, said: “Music is what has accompanied me half a lifetime, so when the doctors told me I could do that, I did not think twice.”

This is clearly one of the many advances in medicine and neuroscience. More information here.

Silent Speech EEG Classification

Silent Speech Classification is a very interesting BCI research using a large number of electrodes where several methods are applied as Adaptive Collection, Common Spatial Patterns (CSP), Support Vector Machine with Gaussian kernel (SVM-G) and Relevance Vector Machine with Gaussian kernel (RVM). 

Mariko Matsumoto is one of the researches dedicated to this area published last year two papers: “Silent speech decoder using adaptive collection,” “Verification of Adaptive Collection for BCI” and "BCI using Silent Speech for Speech Assistive Device".

For more information about BCI/EEG press here.

Brain Computer Interfaces: Fundamentals and Methods

A new BCI book created by Laurent Bougrain, Maureen Clerc and Fabien Lotte will be released soon.

With a price of $140 pre-orders are available here.

OpenVibe 1.1.0 - new version

BCI OpenVibe application has since October a new version available for download. This toolbox allows the creation of BCI circuits using predefined modules or created according to our needs. It was mencioned before in this blog with the posts: OpenVibe 3D Voxel and Topographic Map, Open Source Software For EEG and EEG Animation Using Interactive Matlab Toolbox. 

Following are some of the new features implemented:

• Plugins: Implemented MLP classification algorithm; Added a Regularized version of the CSP filter trainer; Added a new plugin category for evaluation; Added 3 new boxes to evaluation: kappa coefficient, ROCCurve, General Statistics Generator.
• New open source drivers: eemagine EEGO.
• New binary drivers: Brain Rhythm 8, Simulator, SmartBCI and Wearable Sensing Dry Sensor Interface.
• More Plugins: The LDA now has a native multiclass mode; The Spatial Filter box now accepts a configuration file which contains a matrix (refer to the doc for the format specification); The xDawn and the CSP trainer can generate matrix file for the spatial filter; Various optimizations of the Spatial Filter; Changed Signal Display refresh paradigm to make it handle bigger datasets; TCP writer box sends Streamed Matrix and Signal in row-major order.
• Misc: Added ASCII import and export functions for IMatrix matrices
• Drivers: Extended Emotiv EPOC support to gnu/linux; Added Software tagging to the universal TMSI driver; Moved the check impedance option to be part of driver preferences; Various updates to BrainProducts VAmp, BrainProducts Brainamp.
• Tutorials: Added an example of stimulation passing to Python.

It is also supported now by more than 20 acquisition devices:

ANT, ANT/EEmagine, Biosemi, BrainMaster, Brain Products, Cognionics, CTF/VSM, EGI, Emotiv, gTec, LabStreamingLayer, mBrainTrain, MCS/MKS, Micromed, MindMedia, Mitsar, Neuroelectrics, Neurosky, OpenBCI, OpenEEG, TMSi.

For more information press here.

Interactive Brain Injury

The Traumatic Brain Injury (TBI) from the Center of Excellence for Medical Multimedia enables the use of this Interactive Brain where it shows and describes the different brain areas, function and result of injury. 

This online application offers 5 view options: Side view, Inside view, Visual anatomy, Motility and Left & right brain function. At the right column 3 other options: Description area, Function and Result of injury. The next picture shows a visual anatomy of optic radiations:

The trauma can cause nerve cells in the brain to stretch, tear, or pull apart, making it difficult or impossible for the cells to send messages from one part of the brain to another, and to the rest of the body. TBI can interfere with how the brain works, including thinking, remembering, seeing, and controlling movements. Traumatic brain injury can range from mild to very severe depending on many things, including the force of the trauma, previous brain injuries and how quickly emergency medical treatment is given.

Try it pressing here! 

Thinking the Music and Write it Directly

Hi-tech channel from Euronews has just published a small report about a "new way of thinking" the music. This research group predicts that in a near future, using the BCIs, will be possible  to “think” directly the music onto the page, without having to write it down.

Pianist Francesco Prode is wearing a neural sensor on his head, which picks up his brainwaves and sends them to a laptop. In front of him is a Kinect motion sensor of the kind used in video games. As he passes his hand in front of the device, just like an orchestra director, the pianist activates the reproduction of a fragment of piano sound previously recorded by a computer.

For more information press here.

Graz-BCI Team looking for New Members

The BCI Research Group from Graz University are looking for motivated students to work in their project. 

We are a group of students that it has set itself the goal, the team with paraplegic persons ("pilot") to develop a system which makes it possible to control with the power of thought, a (s) Computer (play). Our aim is to participate with our pilots in an international competition in 2016 in Zurich and to compete with more than 100 teams from around the world.

To sign up and get more information press here. 

Graz-BCI Team looking for New Members

The BCI Research Group from Graz University are looking for motivated students to work in their project. 

We are a group of students that it has set itself the goal, the team with paraplegic persons ("pilot") to develop a system which makes it possible to control with the power of thought, a (s) Computer (play). Our aim is to participate with our pilots in an international competition in 2016 in Zurich and to compete with more than 100 teams from around the world.

To sign up and get more information press here. 

Software for Visual Psychophysics

Prof. Hans Strasburger from Universität München brings together to this page the various existing tools to work with Psychophysics, divided by 15 topics:

• Libraries, Public Domain and Commercial Applications for Psychophysics;
• Psychophysical data analysis, SDT;
• Ophthalmology/Optometry/Neuroophthalmology;
• Psychological Experimenting Systems;
• Cognitive Neuroscience;
• (...)

How well do we see? How can visual function be described and which mechanisms can be thought to underly? Visual psychophysics tries to give answers to these general questions, and research in this area needs specialised software. This is an overview on what is available.

PsychToolbox, for Matlab or Octave, is one of tools example commonly used in SSVEP.

Singular Spectrum Analysis of Biomedical Signals

This book created by Saeid Sanei and Hossein Hassani covers new concepts of mathematical and signal processing providing new signal processing results in the form of signals, graphs, images, and tables.

"Recent advancements in signal processing and computerised methods are expected to underpin the future progress of biomedical research and technology, particularly in measuring and assessing signals and images from the human body. This book focuses on singular spectrum analysis (SSA), an effective approach for single channel signal analysis (...)"

It will be available at November, 2015 with a price of $110.

A Subject-independent Pattern-based BCI

A provisional PDF file corresponding to the article "A Subject-independent Pattern-based BCI", created by Andreas M. Ray,  Ranganatha Sitaram,  Mohit Rana,  Emanuele Pasqualotto,  Korhan Buyukturkoglu,  Cuntai Guan,  Kai Keng Ang, Cristián Tejos,  Francisco J. Zamorano, Francisco Aboitiz, Niels Birbaumer and Sergio Ruiz was published in Frontiers in Behavioral NeuroScience . 

"A brain-computer interface (BCI) enables direct communication from the brain to devices, bypassing the traditional pathway of peripheral nerves and muscles. Traditional approaches to BCIs require the user to train for weeks or even months to learn to control the BCI. In contrast, BCIs based on machine learning only require a calibration session of less than an hour before the system can be used, since the machine adapts to the user's existing brain signals. However, this calibration session has to be repeated before each use of the BCI due to inter-session variability, which makes using a BCI still a time-consuming and an error-prone enterprise. In this work, we present a second-order baselining procedure that reduces these variations, and enables the creation of a BCI that can be applied to new subjects without such a calibration session. The method was validated with a motor-imagery classification task performed by 109 subjects. Results showed that our subject-independent BCI without calibration performs as well as the popular common spatial patterns (CSP)-based BCI that does use a calibration session."

For more information / read the (provisional) full text press here. 

BCI Research: A State-of-the-Art Summary 4

This new book "BCI Research: A State-of-the-Art Summary 4" edited by Christoph Guger, Gernot Muller-Putz and Bredan Allison, with a price of $55, is available for pre-order in January 2006 relating the most promising BCI projects.

BCI research is developing quickly, with many new ideas, research groups, and improved technologies. BCIs enable people to communicate just by thinking – without any movement at all. Several different groups have helped severely disabled users communicate with BCIs, and BCI technology is also being extended to facilitate recovery from stroke, epilepsy, and other conditions. (...) This book summarizes the 2014 BCI Award, including the ten projects that were nominated, the winner, and analyses and discussions of the submitted projects and how they reflect general trends in BCI development. 

The National Center for Adaptative Neurotechnologies (NCAN) located on New Scotland Avenue in Albany, New York, are building an infrastructure that supports real-time interactions with the central nervous system (CNS) helping to restore a skill such as locomotion.

"Progress in medical science now enables people with severe paralysis to live for many years. Many of these individuals have great difficulty in communicating. Some may even be entirely "locked in" to their bodies: their minds are functioning, but they cannot move a single muscle to communicate in any way. The capacity for simple communication could greatly improve the quality of their lives. The Center for Adaptive Neurotechnologies has addressed this problem by developing a new generation of brain-based communication devices (BCI) that can provide communication and control functions to people who have lost muscle control. By recording brain waves from the scalp and then decoding them, this system allows people to move a computer cursor up/down and left/right, to spell words, and to perform other simple control functions."

The research areas are divided by Guiding Beneficial Plasticity, Brain-Computer Interface (BCI) Based Rehabilitation and Characterizing and Interacting with Cortical Processes. During 2015 some papers have been published in peer-reviewed neuroscientic, neuroengineering and clinical journals related to this subjects:

• Cortical alpha activity predicts the confidence in an impending action;
• Brain-to-text: Decoding spoken sentences from phone representations (...);
• A general framework for dynamic cortical function:ons (FBO) hypothesis;
• The Plurality of Human Brain-Computer Interfacing;
• Electrocorticographic activity over sensorimotor cortex and motor function (...);
• Restoring walking after spinal cord injury (...);
• Word-level language for P300 spellers based on discriminative graphical models;
• NeuralAct: A Tool to Visualize Electrocortical (ECoG) Activity on a 3D Model (...);
• Targeted neuroplasticity for rehabilitation;
• Toward independent home use of BCIs: a decision algorithm (...);
• Electrocorticographic representations of segmental features in continuous speech.

For more informations about NCAN press here.

Identification of Motor Imagery Movements from EEG Signals Using Dual Tree Complex Wavelet Transform

Conference: 4th ICACCI ’15, Kerala, India
DOI: 10.1109/ICACCI.2015.7275623

Abstract: (...) Dual Tree Complex Wavelet Trans-form (DTCWT) domain based feature extraction method has been proposed to identify left and right hand motor imagery movements from EEG signals. After first performing auto-correlation of the EEG signals to enhance the weak brain signals and reduce noise, the EEG signals are decomposed into several bands of real and imaginary coefficients using DTCWT. The energy of the coefficients from relevant bands have been extracted as features and from the one way ANOVA analysis, scatter plots, box plots and histograms, this features are shown to be promising to distinguish various kinds of EEG signals. (...) K-nearest neighbor (KNN) classifiers have been shown to provide a good mean accuracy of 91.07% which is better than several existing techniques.

To read the full article click here.

Human-Computer Interface Technologies for the Motor Impaired

"Human-Computer Interface Technologies for the Motor Impaired" is the most recent book from Dinesh Kumar and Sridhar Arjunan that examines both the technical and social aspects of Human-Computer Interface (HCI). 

This book introduces to the concept of HCI, identifies and describes the fundamentals associated with a specific technology of HCI, and provides examples for each. It is presented with the following chapters:

• Human-computer interface: Mechanical sensors;
• Brain-computer interface based on thought waves and Evoked potentials-based;
• Myoelectric-based hand gesture recognition for HCI;
• Video-based hand movment and electrooculography for HCI;
• Video-based eye tracking and speech for controlling computers;
• Lip movment for humam-computer interface.

If you want to take a look inside press here.