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https://www.readbyqxmd.com/read/28644398/a-novel-wearable-forehead-eog-measurement-system-for-human-computer-interfaces
#1
Jeong Heo, Heenam Yoon, Kwang Suk Park
Amyotrophic lateral sclerosis (ALS) patients whose voluntary muscles are paralyzed commonly communicate with the outside world using eye movement. There have been many efforts to support this method of communication by tracking or detecting eye movement. An electrooculogram (EOG), an electro-physiological signal, is generated by eye movements and can be measured with electrodes placed around the eye. In this study, we proposed a new practical electrode position on the forehead to measure EOG signals, and we developed a wearable forehead EOG measurement system for use in Human Computer/Machine interfaces (HCIs/HMIs)...
June 23, 2017: Sensors
https://www.readbyqxmd.com/read/28643185/keeping-disability-in-mind-a-case-study-in-implantable-brain-computer-interface-research
#2
Laura Specker Sullivan, Eran Klein, Tim Brown, Matthew Sample, Michelle Pham, Paul Tubig, Raney Folland, Anjali Truitt, Sara Goering
Brain-Computer Interface (BCI) research is an interdisciplinary area of study within Neural Engineering. Recent interest in end-user perspectives has led to an intersection with user-centered design (UCD). The goal of user-centered design is to reduce the translational gap between researchers and potential end users. However, while qualitative studies have been conducted with end users of BCI technology, little is known about individual BCI researchers' experience with and attitudes towards UCD. Given the scientific, financial, and ethical imperatives of UCD, we sought to gain a better understanding of practical and principled considerations for researchers who engage with end users...
June 22, 2017: Science and Engineering Ethics
https://www.readbyqxmd.com/read/28639320/diet-physical-activity-and-behavioural-interventions-for-the-treatment-of-overweight-or-obese-adolescents-aged-12-to-17-years
#3
REVIEW
Lena Al-Khudairy, Emma Loveman, Jill L Colquitt, Emma Mead, Rebecca E Johnson, Hannah Fraser, Joan Olajide, Marie Murphy, Rochelle Marian Velho, Claire O'Malley, Liane B Azevedo, Louisa J Ells, Maria-Inti Metzendorf, Karen Rees
BACKGROUND: Adolescent overweight and obesity has increased globally, and can be associated with short- and long-term health consequences. Modifying known dietary and behavioural risk factors through behaviour changing interventions (BCI) may help to reduce childhood overweight and obesity. This is an update of a review published in 2009. OBJECTIVES: To assess the effects of diet, physical activity and behavioural interventions for the treatment of overweight or obese adolescents aged 12 to 17 years...
June 22, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28638316/a-new-generation-of-brain-computer-interfaces-driven-by-discovery-of-latent-eeg-fmri-linkages-using-tensor-decomposition
#4
Gopikrishna Deshpande, D Rangaprakash, Luke Oeding, Andrzej Cichocki, Xiaoping P Hu
A Brain-Computer Interface (BCI) is a setup permitting the control of external devices by decoding brain activity. Electroencephalography (EEG) has been extensively used for decoding brain activity since it is non-invasive, cheap, portable, and has high temporal resolution to allow real-time operation. Due to its poor spatial specificity, BCIs based on EEG can require extensive training and multiple trials to decode brain activity (consequently slowing down the operation of the BCI). On the other hand, BCIs based on functional magnetic resonance imaging (fMRI) are more accurate owing to its superior spatial resolution and sensitivity to underlying neuronal processes which are functionally localized...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28627964/comparison-of-the-success-rate-between-monocanalicular-and-bicanalicular-intubations-in-incomplete-complex-congenital-nasolacrimal-duct-obstruction
#5
Bahram Eshraghi, Mansooreh Jamshidian-Tehrani, Arash Mirmohammadsadeghi
This article compares the success rate between monocanalicular (MCI) and bicanalicular intubations (BCI) in incomplete complex congenital nasolacrimal duct obstruction (CNLDO) and evaluate the factors responsible for the success of intubation. First, 99 patients with incomplete complex CNLDO underwent MCI (Monoka) or BCI (Crawford). Therapeutic success was defined as dye disappearance test grade 0-1 and complete resolution of previous symptoms at 12 months' follow-up. The success rates were compared between two groups...
June 19, 2017: Orbit
https://www.readbyqxmd.com/read/28626393/a-ssvep-stimuli-encoding-method-using-trinary-frequency-shift-keying-encoded-ssvep-tfsk-ssvep
#6
Xing Zhao, Dechun Zhao, Xia Wang, Xiaorong Hou
SSVEP is a kind of BCI technology with advantage of high information transfer rate. However, due to its nature, frequencies could be used as stimuli are scarce. To solve such problem, a stimuli encoding method which encodes SSVEP signal using Frequency Shift-Keying (FSK) method is developed. In this method, each stimulus is controlled by a FSK signal which contains three different frequencies that represent "Bit 0," "Bit 1" and "Bit 2" respectively. Different to common BFSK in digital communication, "Bit 0" and "Bit 1" composited the unique identifier of stimuli in binary bit stream form, while "Bit 2" indicates the ending of a stimuli encoding...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28626358/psychosocial-correlates-of-patient-provider-family-planning-discussions-among-hiv-infected-pregnant-women-in-south-africa
#7
Violeta J Rodriguez, Ryan R Cook, Stephen M Weiss, Karl Peltzer, Deborah L Jones
Patient-provider family planning discussions and preconception counseling can reduce maternal and neonatal risks by increasing adherence to provider recommendations and antiretroviral medication. However, HIV-infected women may not discuss reproductive intentions with providers due to anticipation of negative reactions and stigma. This study aimed to identify correlates of patient-provider family planning discussions among HIV-infected women in rural South Africa, an area with high rates of antenatal HIV and suboptimal rates of prevention of mother-to-child transmission (PMTCT) of HIV...
2017: Open Access J Contracept
https://www.readbyqxmd.com/read/28613237/major-depression-detection-from-eeg-signals-using-kernel-eigen-filter-bank-common-spatial-patterns
#8
Shih-Cheng Liao, Chien-Te Wu, Hao-Chuan Huang, Wei-Teng Cheng, Yi-Hung Liu
Major depressive disorder (MDD) has become a leading contributor to the global burden of disease; however, there are currently no reliable biological markers or physiological measurements for efficiently and effectively dissecting the heterogeneity of MDD. Here we propose a novel method based on scalp electroencephalography (EEG) signals and a robust spectral-spatial EEG feature extractor called kernel eigen-filter-bank common spatial pattern (KEFB-CSP). The KEFB-CSP first filters the multi-channel raw EEG signals into a set of frequency sub-bands covering the range from theta to gamma bands, then spatially transforms the EEG signals of each sub-band from the original sensor space to a new space where the new signals (i...
June 14, 2017: Sensors
https://www.readbyqxmd.com/read/28611611/a-synchronous-motor-imagery-based-neural-physiological-paradigm-for-brain-computer-interface-speller
#9
Lei Cao, Bin Xia, Oladazimi Maysam, Jie Li, Hong Xie, Niels Birbaumer
Brain Computer Interface (BCI) speller is a typical BCI-based application to help paralyzed patients express their thoughts. This paper proposed a novel motor imagery based BCI speller with Oct-o-spell paradigm for word input. Furthermore, an intelligent input method was used for improving the performance of the BCI speller. For the English word spelling experiment, we compared synchronous control with previous asynchronous control under the same experimental condition. There were no significant differences between these two control methods in the classification accuracy, information transmission rate (ITR) or letters per minute (LPM)...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28597846/single-trial-effective-brain-connectivity-patterns-enhance-discriminability-of-mental-imagery-tasks
#10
Dheeraj Rathee, Hubert Cecotti, Girijesh Prasad
The majority of the current approaches of connectivity based BCI systems focus on distinguishing between different motor imagery (MI) tasks. Brain regions associated with MI are anatomically close to each other, hence these BCI systems suffer from low performances. Our objective is to introduce single-trial connectivity feature based BCI system for cognition imagery (CI) based tasks wherein the associated brain regions are located relatively far away as compared to those for MI...
June 9, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28596725/a-ternary-brain-computer-interface-based-on-single-trial-readiness-potentials-of-self-initiated-fine-movements-a-diversified-classification-scheme
#11
Elias Abou Zeid, Alborz Rezazadeh Sereshkeh, Benjamin Schultz, Tom Chau
In recent years, the readiness potential (RP), a type of pre-movement neural activity, has been investigated for asynchronous electroencephalogram (EEG)-based brain-computer interfaces (BCIs). Since the RP is attenuated for involuntary movements, a BCI driven by RP alone could facilitate intentional control amid a plethora of unintentional movements. Previous studies have mainly attempted binary single-trial classification of RP. An RP-based BCI with three or more states would expand the options for functional control...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28593170/increased-detrusor-collagen-is-associated-with-detrusor-overactivity-and-decreased-bladder-compliance-in-men-with-benign-prostatic-obstruction
#12
Carlos H S Bellucci, Wesley de O Ribeiro, Thiago S Hemerly, José de Bessa, Alberto A Antunes, Katia R M Leite, Homero Bruschini, Miguel Srougi, Cristiano M Gomes
BACKGROUND: This study aimed to investigate the relationship between detrusor collagen content and urodynamic parameters in men with benign prostatic obstruction. MATERIAL AND METHODS: Nineteen consecutive patients undergoing open prostatectomy for bladder outlet obstruction (BOO) due to benign prostatic hyperplasia (BPH) were evaluated. Urodynamic tests were performed in all patients. BOO and detrusor contractility were assessed with the BOO index (BOOI) and the bladder contractility index (BCI), respectively...
June 2017: Prostate International
https://www.readbyqxmd.com/read/28588442/a-multifunctional-brain-computer-interface-intended-for-home-use-an-evaluation-with-healthy-participants-and-potential-end-users-with-dry-and-gel-based-electrodes
#13
Ivo Käthner, Sebastian Halder, Christoph Hintermüller, Arnau Espinosa, Christoph Guger, Felip Miralles, Eloisa Vargiu, Stefan Dauwalder, Xavier Rafael-Palou, Marc Solà, Jean M Daly, Elaine Armstrong, Suzanne Martin, Andrea Kübler
Current brain-computer interface (BCIs) software is often tailored to the needs of scientists and technicians and therefore complex to allow for versatile use. To facilitate home use of BCIs a multifunctional P300 BCI with a graphical user interface intended for non-expert set-up and control was designed and implemented. The system includes applications for spelling, web access, entertainment, artistic expression and environmental control. In addition to new software, it also includes new hardware for the recording of electroencephalogram (EEG) signals...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28585523/fusion-of-p300-and-eye-tracker-data-for-spelling-using-bci2000
#14
Dmitry Kalika, Leslie Collins, Kevin Caves, Chandra Throckmorton
OBJECTIVE: Various augmentative and alternative communication (AAC) devices have been developed in order to aid communication for individuals with communication disorders. Recently, there has been interest in combining EEG data and eye-gaze data with the goal of developing a hybrid (or "fused") BCI (hBCI) AAC system. This work explores the effectiveness of a speller that fuses data from an eye-tracker and the P300 speller in order to create a hybrid P300 speller. APPROACH: This hybrid speller collects both eye-tracking and EEG data in parallel, and the user spells characters on the screen in the same way that they would if they were only using the P300 speller...
June 6, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28583850/clinical-and-electrocardiographic-features-of-complete-heart-block-after-blunt-cardiac-injury-a-systematic-review-of-the-literature
#15
Hussam Ali, Francesco Furlanello, Pierpaolo Lupo, Sara Foresti, Guido De Ambroggi, Gianluca Epicoco, Lorenzo Semprini, Angelica Fundaliotis, Riccardo Cappato
The underlying mechanisms and temporal course of complete heart block (CHB) after blunt cardiac injuries (BCI) are poorly understood, and a systematic analysis of available data is lacking. In this systematic review, PubMed was searched for publications of reported cases of CHB-BCI analyzing clinical findings, electrocardiographic features, temporal course, and outcomes. Case reports on CHB-BCI were available for 50 patients, mainly secondary to traffic or sport accidents. A fatal outcome occurred in 20% of patients, while a structural damage of the atrioventricular (AV) conductive system was evident in 50% of necropsy studies...
June 3, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28578663/cross-border-spread-lineage-displacement-and-evolutionary-rate-estimation-of-rabies-virus-in-yunnan-province-china
#16
Yuzhen Zhang, Bram Vrancken, Yun Feng, Simon Dellicour, Qiqi Yang, Weihong Yang, Yunzhi Zhang, Lu Dong, Oliver G Pybus, Hailin Zhang, Huaiyu Tian
BACKGROUND: Rabies is an important but underestimated threat to public health, with most cases reported in Asia. Since 2000, a new epidemic wave of rabies has emerged in Yunnan Province, southwestern China, which borders three countries in Southeast Asia. METHOD: We estimated gene-specific evolutionary rates for rabies virus using available data in GenBank, then used this information to calibrate the timescale of rabies virus (RABV) spread in Asia. We used 452 publicly available geo-referenced complete nucleoprotein (N) gene sequences, including 52 RABV sequences that were recently generated from samples collected in Yunnan between 2008 and 2012...
June 3, 2017: Virology Journal
https://www.readbyqxmd.com/read/28573984/a-gaussian-mixture-model-based-adaptive-classifier-for-fnirs-brain-computer-interfaces-and-its-testing-via-simulation
#17
Zheng Li, Yi-Han Jiang, Lian Duan, Chao-Zhe Zhu
OBJECTIVE: Functional near infra-red spectroscopy (fNIRS) is a promising brain imaging technology for brain-computer interfaces (BCI). Future clinical uses of fNIRS will likely require operation over long time spans, during which neural activation patterns may change. However, current decoders for fNIRS signals are not designed to handle changing activation patterns. The objective of this study is to test via simulations a new adaptive decoder for fNIRS signals, the Gaussian mixture model adaptive classifier (GMMAC)...
June 2, 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28572817/development-of-a-novel-motor-imagery-control-technique-and-application-in-a-gaming-environment
#18
Ting Li, Jinhua Zhang, Tao Xue, Baozeng Wang
We present a methodology for a hybrid brain-computer interface (BCI) system, with the recognition of motor imagery (MI) based on EEG and blink EOG signals. We tested the BCI system in a 3D Tetris and an analogous 2D game playing environment. To enhance player's BCI control ability, the study focused on feature extraction from EEG and control strategy supporting Game-BCI system operation. We compared the numerical differences between spatial features extracted with common spatial pattern (CSP) and the proposed multifeature extraction...
2017: Computational Intelligence and Neuroscience
https://www.readbyqxmd.com/read/28566997/eeg-based-quantification-of-cortical-current-density-and-dynamic-causal-connectivity-generalized-across-subjects-performing-bci-monitored-cognitive-tasks
#19
Hristos Courellis, Tim Mullen, Howard Poizner, Gert Cauwenberghs, John R Iversen
Quantification of dynamic causal interactions among brain regions constitutes an important component of conducting research and developing applications in experimental and translational neuroscience. Furthermore, cortical networks with dynamic causal connectivity in brain-computer interface (BCI) applications offer a more comprehensive view of brain states implicated in behavior than do individual brain regions. However, models of cortical network dynamics are difficult to generalize across subjects because current electroencephalography (EEG) signal analysis techniques are limited in their ability to reliably localize sources across subjects...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28562624/application-of-a-single-flicker-online-ssvep-bci-for-spatial-navigation
#20
Jingjing Chen, Dan Zhang, Andreas K Engel, Qin Gong, Alexander Maye
A promising approach for brain-computer interfaces (BCIs) employs the steady-state visual evoked potential (SSVEP) for extracting control information. Main advantages of these SSVEP BCIs are a simple and low-cost setup, little effort to adjust the system parameters to the user and comparatively high information transfer rates (ITR). However, traditional frequency-coded SSVEP BCIs require the user to gaze directly at the selected flicker stimulus, which is liable to cause fatigue or even photic epileptic seizures...
2017: PloS One
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