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https://www.readbyqxmd.com/read/28227965/multiscale-brain-machine-interface-decoders
#1
Han-Lin Hsieh, Maryam M Shanechi, Han-Lin Hsieh, Maryam M Shanechi, Han-Lin Hsieh, Maryam M Shanechi
Brain-machine interfaces (BMI) have vastly used a single scale of neural activity, e.g., spikes or electrocorticography (ECoG), as their control signal. New technology allows for simultaneous recording of multiple scales of neural activity, from spikes to local field potentials (LFP) and ECoG. These advances introduce the new challenge of modeling and decoding multiple scales of neural activity jointly. Such multi-scale decoding is challenging for two reasons. First, spikes are discrete-valued and ECoG/LFP are continuous-valued, resulting in fundamental differences in statistical characteristics...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227963/predicting-seizures-from-local-field-potentials-recorded-via-intracortical-microelectrode-arrays
#2
Mehdi Aghagolzadeh, Leigh R Hochberg, Sydney S Cash, Wilson Truccolo, Mehdi Aghagolzadeh, Leigh R Hochberg, Sydney S Cash, Wilson Truccolo, Sydney S Cash, Wilson Truccolo, Mehdi Aghagolzadeh, Leigh R Hochberg
The need for new therapeutic interventions to treat pharmacologically resistant focal epileptic seizures has led recently to the development of closed-loop systems for seizure control. Once a seizure is predicted/detected by the system, electrical stimulation is delivered to prevent seizure initiation or spread. So far, seizure prediction/detection has been limited to tracking non-invasive electroencephalogram (EEG) or intracranial EEG (iEEG) signals. Here, we examine seizure prediction based on local field potentials (LFPs) from a small neocortical patch recorded via a 10×10 microelectrode array implanted in a patient with focal seizures...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227920/in-vitro-evaluation-of-the-long-term-stability-of-pedot-pss-coated-microelectrodes-for-chronic-recording-and-electrical-stimulation-of-neurons
#3
A Schander, T Tesmann, S Strokov, H Stemmann, A K Kreiter, W Lang, A Schander, T Tesmann, S Strokov, H Stemmann, A K Kreiter, W Lang, A K Kreiter, W Lang, A Schander, H Stemmann, S Strokov
For the chronic application of neural prostheses long-term stable microelectrodes for electrical stimulation are essential. In recent years many developments were done to investigate different appropriate materials for these electrodes. One of these materials is the electrical conductive polymer PEDOT, which has low impedance and high charge injection capacity. However, the long-term stability of this polymer is still unclear. Thus this paper reports on the in-vitro evaluation of the long-term stability of PEDOT coated gold microelectrodes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227900/automated-assessment-of-postural-stability-system
#4
Alessandro Napoli, Christian R Ward, Stephen M Glassd, Carole Tucker, Iyad Obeid, Alessandro Napoli, Christian R Ward, Stephen M Glass, Carole Tucker, Iyad Obeid, Christian R Ward, Carole Tucker, Alessandro Napoli, Iyad Obeid, Stephen M Glass
The Balance Error Scoring System (BESS) is one of the most commonly used clinical tests to evaluate static postural stability deficits resulting from traumatic brain events and musculoskeletal injury. This test requires a trained operator to visually assess balance and give the subject a performance score based on the number of balance "errors" they committed. Despite being regularly used in several real-world situations, the BESS test is scored by clinician observation and is therefore (a) potentially susceptible to biased and inaccurate test scores and (b) cannot be administered in the absence of a trained provider...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227896/intarsia-sensorized-band-and-textrodes-for-real-time-myoelectric-pattern-recognition
#5
Shannon Brown, Max Ortiz-Catalan, Joel Petersson, Kristian Rodby, Fernando Seoane, Shannon Brown, Max Ortiz-Catalan, Joel Petersson, Kristian Rodby, Fernando Seoane, Max Ortiz-Catalan, Fernando Seoane, Kristian Rodby, Shannon Brown, Joel Petersson
Surface Electromyography (sEMG) has applications in prosthetics, diagnostics and neuromuscular rehabilitation. Self-adhesive Ag/AgCl are the electrodes preferentially used to capture sEMG in short-term studies, however their long-term application is limited. In this study we designed and evaluated a fully integrated smart textile band with electrical connecting tracks knitted with intarsia techniques and knitted textile electrodes. Real-time myoelectric pattern recognition for motor volition and signal-to-noise ratio (SNR) were used to compare its sensing performance versus the conventional Ag-AgCl electrodes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227885/orthodontic-force-simulation-of-tooth-pdl-bone-complex-under-archwire-loading
#6
Xinwen Zhou, Zeyang Xia, Yangzhou Gan, Dongxia Zhang, Jing Xiong, Peng Fang, Guanglin Li, Qunfei Zhao, Xinwen Zhou, Zeyang Xia, Yangzhou Gan, Dongxia Zhang, Jing Xiong, Peng Fang, Guanglin Li, Qunfei Zhao, Zeyang Xia, Peng Fang, Xinwen Zhou, Dongxia Zhang, Yangzhou Gan, Guanglin Li, Jing Xiong, Qunfei Zhao
Orthodontic force simulation is very important for the guidance of clinical orthodontic treatment. Previous works were mainly conducted by directly loading the force on a single or a few teeth. However, in clinic, the orthodontic force is provided by loading orthodontic appliances, and there currently is no appropriate way to measure the force on the teeth provided by the loaded appliances. This study presents a method to simulate the orthodontic force of a whole Tooth-Periodontal Ligament-Bone Complex (TPBC) by directly loading the archwire to the dentition applying the finite element method...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227869/simea-a-framework-for-simulating-neurons-on-multi-electrode-array
#7
Vafa Andalibi, Timo Aaltonen, Francois Christophe, Tommi Mikkonen, Vafa Andalibi, Timo Aaltonen, Francois Christophe, Tommi Mikkonen, Timo Aaltonen, Vafa Andalibi, Tommi Mikkonen, Francois Christophe
A Multi-Electrode Array (MEA) is a practical device for recording the extracellular activity of in-vitro biological culture. Such culture - for instance neurons - is prone to mistakes leading to irrelevant recordings or no recording at all. Additionally, with the expenses generated by in-vitro culture, minimizing risks is a must. This paper proposes a framework designed and implemented for simulating the spatial positioning of neuronal cultures on a MEA. The framework serves as a sandbox for researchers to simulate the model of their MEA experiments before its eventual in-vitro implementation...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227862/effects-of-high-frequency-rtms-on-sleep-deprivation-a-pilot-study
#8
D P Martinez-Cancino, J Azpiroz-Leehan, L Jimenez-Angeles, A Garcia-Quintanar, R Santana-Miranda, D P Martinez-Cancino, J Azpiroz-Leehan, L Jimenez-Angeles, A Garcia-Quintanar, R Santana-Miranda, A Garcia-Quintanar, L Jimenez-Angeles, R Santana-Miranda, J Azpiroz-Leehan, D P Martinez-Cancino
Transcranial magnetic stimulation is a neurostimulation technique which has the potential to serve as a unique research tool for investigating a wide variety of fields in cognitive neuroscience. TMS has been approved by the FDA to serve as a treatment to depression and has also been used to evaluate its effects among several conditions such as Alzheimer, Parkinson disease, chronic pain and stroke. High frequency TMS has been previously used with the intention to measure and modulate the negative effects of sleep deprivation in cognitive performance, but there is no consensus about the ideal protocol yet...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227843/investigating-motor-imagery-tasks-by-their-neural-effects-a-case-study
#9
I E Nicolae, M M C Stefan, B Hurezeanu, D D Taralunga, R Strungaru, T M Vasile, O A Bajenaru, G M Ungureanu, I E Nicolae, M M C Stefan, B Hurezeanu, D D Taralunga, R Strungaru, T M Vasile, O A Bajenaru, G M Ungureanu, B Hurezeanu, R Strungaru, G M Ungureanu, O A Bajenaru, D D Taralunga, T M Vasile, I E Nicolae, M M C Stefan
Motor imagery, one of the first investigated neural process for Brain-Computer Interfaces (BCIs) still provides a great challenge nowadays. Aiming a better and more accurate control, multiple researches have been conducted by the scientific community. Nevertheless, there is still no robust and confident application developed. In order to augment the potential referring to motor imagery, and to attract user's interest, we propose multiple motor imagery tasks in combination with different visual or auditory stimuli...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227829/development-of-a-diagnostic-feedback-device-to-assess-neonatal-cardiopulmonary-resuscitation-chest-compression-performance
#10
Debbie Lloyd, Dawie van den Heever, Kiran Dellimore, Johan Smith, Debbie Lloyd, Dawie van den Heever, Kiran Dellimore, Johan Smith, Dawie Van Den Heever, Johan Smith, Kiran Dellimore, Debbie Lloyd
Neonatal cardiopulmonary resuscitation (NCPR) is an important intervention to save the lives of newborns who suffer from cardiac and respiratory arrest. Despite its importance there is a dearth of NCPR research and no commercially available feedback device suitable for use during NCPR. The aim of this study is to develop a diagnostic feedback device in the form of a patch placed on the infant's chest. The diagnostic feedback patch measures both the compression depth and force during NCPR, while giving audio-visual feedback according to current NCPR guidelines...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227804/novel-dry-electrodes-for-recording-electrodermal-activity
#11
Hugo F Posada-Quintero, Ryan Rood, Yeonsik Noh, Ken Burnham, John Pennace, Ki H Chon, Hugo F Posada-Quintero, Ryan Rood, Yeonsik Noh, Ken Burnham, John Pennace, Ki H Chon, Ryan Rood, John Pennace, Ki H Chon, Hugo F Posada-Quintero, Ken Burnham, Yeonsik Noh
Novel carbon/salt adhesive (CSA) electrodes have been found suitable for collecting electrodermal activity (EDA) signals. Ag/AgCl electrodes are considered the standard for collecting EDA signals, because it highly avoids electrodes' polarization. Ag is an expensive commodity. Furthermore, a hydrogel layer is needed for the Ag/AgCl electrodes to collect EDA signals. Adding hydrogel to the electrodes is a cumbersome process. Aforementioned circumstances highlight the need for a more accessible media to collect these signals, allowing EDA use to spread...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227796/estimation-of-joint-center-and-measurement-of-finger-motion-by-inertial-sensors
#12
Keisuke Kitano, Akihito Ito, Nobutaka Tsujiuchi, Shigeru Wakida, Keisuke Kitano, Akihito Ito, Nobutaka Tsujiuchi, Shigeru Wakida, Akihito Ito, Shigeru Wakida, Keisuke Kitano, Nobutaka Tsujiuchi
The authors developed a wearable finger motion measurement system using inertial and geomagnetic sensors. Using this system, motion and posture of the hands and fingers can be measured. However, the joint center and segment axis cannot be accurately measured in a previous study using the sensors. Therefore, the authors proposed a method of estimating the joint center and segment lengths. This method utilizes the fact that the calculation formula of the rotational acceleration in the sensor's coordinate system is the vector product...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227748/the-correlation-between-transcranial-magnetic-stimulation-parameters-and-neuromuscular-properties-in-children-with-cerebral-palsy
#13
H Marzbani, Sh Parvin, S Amiri, M Lotfian, M R Kharazi, Sh Azizi, M M Mirbagheri, H Marzbani, Sh Parvin, S Amiri, M Lotfian, M R Kharazi, Sh Azizi, M M Mirbagheri, M R Kharazi, Sh Azizi, M Lotfian, M M Mirbagheri, S Amiri, Sh Parvin, H Marzbani
We studied the correlation between corticospinal signaling and neuromuscular properties in children with Cerebral Palsy (CP). Corticospinal signaling was evaluated using Transcranial Magnetic Stimulation (TMS). Neuromuscular properties were quantified using Hoffmann reflex (H-reflex), sonoelastography, clinical measurements, and isokinetic measures. In particular, we determined the relationship between the TMS parameters of the ankle joint and the neuromuscular features of ankle extensors and flexors as well as popular clinical measures of gait speed, endurance, balance and mobility...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227728/comparison-between-users-of-a-new-methodology-for-heart-sound-auscultation
#14
Ana Castro, Pedro Gomes, Sandra S Mattos, Miguel T Coimbra, Ana Castro, Pedro Gomes, Sandra S Mattos, Miguel T Coimbra, Ana Castro, Sandra S Mattos, Pedro Gomes, Miguel Y Coimbra
Auscultation is a routine exam and the first line of screening in heart pathologies. The objective of this study was to assess if using a new data collection system, the DigiScope Collector, with a guided and automatic annotation of heart auscultation, different levels of expertise/experience users could collect similar digital auscultations. Data were collected within the Heart Caravan Initiative (Paraíba, Brasil). Patients were divided into two study groups: Group 1 evaluated by a third year medical student (User 1), and an experienced nurse (User 2); Group 2 evaluated by User 2 and an Information Technology professional (User 3)...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227720/can-we-make-a-carpet-smart-enough-to-detect-falls
#15
Fadi Muheidat, Harry W Tyrer, Fadi Muheidat, Harry W Tyrer, Harry W Tyrer, Fadi Muheidat
In this paper, we have enhanced smart carpet, which is a floor based personnel detector system, to detect falls using a faster but low cost processor. Our hardware front end reads 128 sensors, with sensors output a voltage due to a person walking or falling on the carpet. The processor is Jetson TK1, which provides more computing power than before. We generated a dataset with volunteers who walked and fell to test our algorithms. Data obtained allowed examining data frames (a frame is a single scan of the carpet sensors) read from the data acquisition system...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227663/histological-evaluation-of-tissue-damage-caused-by-rotational-needle-insertion
#16
Ryosuke Tsumura, Yusuke Takishita, Yuta Fukushima, Hiroyasu Iwata, Ryosuke Tsumura, Yusuke Takishita, Yuta Fukushima, Hiroyasu Iwata, Hiroyasu Iwata, Yuta Fukushima, Yusuke Takishita, Ryosuke Tsumura
Needles used in percutaneous insertion must be as thin as possible to minimize invasiveness. However, using extra-thin needles with a diameter less than 25G (0.53 mm diameter) can cause needle deflection. Needle deflection can be minimized by insertion with axial rotation along the needle shaft; this rotation is also useful for steering the insertion direction of the needle tip. However, although high rotation speeds may decrease needle deflection, this may increase tissue damage. Therefore, the purpose of this study was to histologically evaluate tissue damage caused by the rotational needle-insertion method, and to verify the needle-tip deflection caused by tissue damage...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227628/a-wearable-bluetooth-le-sensor-for-patient-monitoring-during-mri-scans
#17
Christian Vogt, Jonas Reber, Daniel Waltisberg, Lars Buthe, Josip Marjanovic, Niko Munzenrieder, Klaas P Pruessmann, Gerhard Troster, Christian Vogt, Jonas Reber, Daniel Waltisberg, Lars Buthe, Josip Marjanovic, Niko Munzenrieder, Klaas P Pruessmann, Gerhard Troster, Josip Marjanovic, Klaas P Pruessmann, Niko Munzenrieder, Christian Vogt, Lars Buthe, Gerhard Troster, Jonas Reber, Daniel Waltisberg
This paper presents a working prototype of a wearable patient monitoring device capable of recording the heart rate, blood oxygen saturation, surface temperature and humidity during an magnetic resonance imaging (MRI) experiment. The measured values are transmitted via Bluetooth low energy (LE) and displayed in real time on a smartphone on the outside of the MRI room. During 7 MRI image acquisitions of at least 1 min and a total duration of 25 min no Bluetooth data packets were lost. The raw measurements of the light intensity for the photoplethysmogram based heart rate measurement shows an increased noise floor by 50LSB (least significant bit) during the MRI operation, whereas the temperature and humidity readings are unaffected...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227617/detection-of-chewing-from-piezoelectric-film-sensor-signals-using-ensemble-classifiers
#18
Muhammad Farooq, Edward Sazonov, Muhammad Farooq, Edward Sazonov, Muhammad Farooq, Edward Sazonov
Selection and use of pattern recognition algorithms is application dependent. In this work, we explored the use of several ensembles of weak classifiers to classify signals captured from a wearable sensor system to detect food intake based on chewing. Three sensor signals (Piezoelectric sensor, accelerometer, and hand to mouth gesture) were collected from 12 subjects in free-living conditions for 24 hrs. Sensor signals were divided into 10 seconds epochs and for each epoch combination of time and frequency domain features were computed...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227591/an-inductive-narrow-pulse-rfid-telemetry-system-for-gastric-slow-waves-monitoring
#19
Amir Javan-Khoskholgh, Zaid Abukhalaf, Ji Li, Larry S Miller, Mehdi Kiani, Aydin Farajidavar, Amir Javan-Khoskholgh, Zaid Abukhalaf, Ji Li, Larry S Miller, Mehdi Kiani, Aydin Farajidavar, Larry S Miller, Amir Javan-Khoskholgh, Ji Li, Mehdi Kiani, Zaid Abukhalaf
We present a passive data telemetry system for real-time monitoring of gastric electrical activity of a living subject. The system is composed of three subsystems: an implantable unit (IU), a wearable unit (WU), and a stationary unit (SU). Data communication between the IU and WU is based on a radio-frequency identification (RFID) link operating at 13.56 MHz. Since wireless power transmission and reverse data telemetry system share the same inductive interface, a load shift keying (LSK)-based differential pulse position (DPP) coding data communication with only 6...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227558/the-limb-movement-analysis-of-rehabilitation-exercises-using-wearable-inertial-sensors
#20
Bingquan Huang, Oonagh Giggins, Tahar Kechadi, Brian Caulfield, Bingquan Huang, Oonagh Giggins, Tahar Kechadi, Brian Caulfield, Bingquan Huang, Brian Caulfield, Oonagh Giggins, Tahar Kechadi
Due to no supervision of a therapist in home based exercise programs, inertial sensor based feedback systems which can accurately assess movement repetitions are urgently required. The synchronicity and the degrees of freedom both show that one movement might resemble another movement signal which is mixed in with another not precisely defined movement. Therefore, the data and feature selections are important for movement analysis. This paper explores the data and feature selection for the limb movement analysis of rehabilitation exercises...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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