2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)最新文献_第4页

Engagement-sensitive interactive neuromuscular electrical therapy system for post-stroke balance rehabilitation - a concept study 参与敏感互动神经肌肉电治疗系统用于脑卒中后平衡康复的概念研究

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146592

Deepesh Kumar, Gorish Aggarwal, Rishabh Sehgal, Abhijit Das, U. Lahiri, Anirban Dutta

{"title":"Engagement-sensitive interactive neuromuscular electrical therapy system for post-stroke balance rehabilitation - a concept study","authors":"Deepesh Kumar, Gorish Aggarwal, Rishabh Sehgal, Abhijit Das, U. Lahiri, Anirban Dutta","doi":"10.1109/NER.2015.7146592","DOIUrl":"https://doi.org/10.1109/NER.2015.7146592","url":null,"abstract":"Stroke is caused when an artery carrying blood from heart to an area in the brain bursts or a clot obstructs the blood flow thereby preventing delivery of oxygen and nutrients. About half of the stroke survivors are left with some degree of disability. Neuroplasticity is involved in post-stroke functional disturbances, but also in rehabilitation. Beneficial neuroplastic changes may be facilitated with neuromuscular electrical stimulation (NMES) where active cortical participation in rehabilitation procedures may be facilitated by driving NMES with electromyogram (EMG), electrooculogram (EOG), and electroencephalogram (EEG) derived biopotentials, that represent simultaneous volitional effort and task engagement. During the visuomotor standing balance task, we propose that gaze-interaction (e.g., fixation duration, pupil diameter, blink rate) with the visual stimuli can be a measure of task engagement which can be used to adapt task difficulty to facilitate post-stroke residual visuomotor function. Here, the elapsed time between the last visual fixation to the target and the initiation of the motor response, known as the quiet eye (QE) period, has emerged as a characteristic of higher levels of performance. In this article, we discuss this novel interactive therapy paradigm consisting of a low-cost static posturography system combined with engagement-sensitive volitionally driven NMES for post-stroke balance rehabilitation.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127944056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Enhancing single-trial mental workload estimation through xDAWN spatial filtering 通过xDAWN空间滤波增强单次脑力工作负荷估计

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146634

R. Roy, S. Bonnet, S. Charbonnier, A. Campagne

{"title":"Enhancing single-trial mental workload estimation through xDAWN spatial filtering","authors":"R. Roy, S. Bonnet, S. Charbonnier, A. Campagne","doi":"10.1109/NER.2015.7146634","DOIUrl":"https://doi.org/10.1109/NER.2015.7146634","url":null,"abstract":"Mental state monitoring is a topical issue in neuroengineering, more particularly for passive brain-computer interface (pBCI) applications. One of the mental states that are currently under focus is mental workload. The level of workload can be estimated from electroencephalographic activity (EEG) and markers derived from this signal. In active BCI applications, a well-known neurophysiological marker, the event-related potential (ERP), is commonly enhanced using a spatial filtering step. In this study, we evaluated how a spatial filtering method such as the xDAWN algorithm could improve mental workload classification performance. Twenty participants performed a Sternberg memory task for 18 minutes with pseudorandomized trials of low vs. high workload (2/6 digits to memorize). Three signal processing chains were compared on their performance to estimate mental workload from the single-trial ERPs of the test item (i.e. present/absent in the memorized list). All 3 included an FLDA classifier with a shrinkage covariance estimation and a 10-fold cross-validation. One chain used the ERPs of a relevant electrode for workload estimation (Cz) and the 2 others used the ERPs of the 32 electrodes and an xDAWN spatial filtering step with either 1 or 2 virtual electrodes kept for classification. Statistical analyses revealed that spatial filtering significantly improved mental workload estimation, with up to 98% of correct classification using the xDAWN algorithm and 2 virtual electrodes.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131379794","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Decoding and mapping of right hand motor imagery tasks using EEG source imaging 基于脑电源成像的右手运动想象任务的解码与映射

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146593

B. Edelman, Bryan S. Baxter, B. He

引用次数: 12

Evaluation of regression methods for the continuous decoding of finger movement from surface EMG and accelerometry 基于表面肌电信号和加速度计的手指运动连续解码回归方法的评价

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146702

Agamemnon Krasoulis, S. Vijayakumar, K. Nazarpour

引用次数: 62

An intrafascicular electrode with integrated amplifiers for peripheral nerve recording 带集成放大器的神经束内电极用于周围神经记录

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146642

K. Ng, A. Cutrone, S. Bossi, S. Nag, Ignacio Delgado-Martínez, Swathi Sheshadri, Claire A. Poulard, Y. Xu, S. Yen, N. Thakor

{"title":"An intrafascicular electrode with integrated amplifiers for peripheral nerve recording","authors":"K. Ng, A. Cutrone, S. Bossi, S. Nag, Ignacio Delgado-Martínez, Swathi Sheshadri, Claire A. Poulard, Y. Xu, S. Yen, N. Thakor","doi":"10.1109/NER.2015.7146642","DOIUrl":"https://doi.org/10.1109/NER.2015.7146642","url":null,"abstract":"Thin-film longitudinal intrafascicular electrodes (tf-LIFE) are widely used for peripheral nerve recordings. tf-LIFEs are also promising electrodes for neural signal acquisition in future peripheral nerve prostheses. However, common mode signal interference, and electrical artifacts originating from long wire leads and wire movement are known problems encountered when using such electrodes, which lead to degradation in the recording quality. Here, we report an active tf-LIFE electrode implemented by integrating a neural amplifier chip die in close proximity to a tf-LIFE electrode. Consuming only 1mW and measuring 37 mm×7.2 mm×2.4 mm, this active tf-LIFE electrode creates a reliable connection and considerably shortens the distance between the electrode site and neural amplifier. This active electrode has demonstrated repeatable in-vivo recordings of compound action potentials from the rat sciatic nerve. Our results show that this electrode is suitable for repeated in-vivo recordings of compound action potentials from nerves in applications such as peripheral and visceral nerve interfaces that require low-noise stable nerve recordings.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132540803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

In-vivo tests of a 16-channel implantable wireless neural stimulator 16通道植入式无线神经刺激器的体内试验

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146662

P. Troyk, Samuel D. Bredeson, S. Cogan, M. Romero-Ortega, Sungjae Suh, Zhe Hu, A. Kanneganti, Rafael Granja-Vazquez, J. Seifert, M. Bak

引用次数: 20

Simultaneous microelectrode recording of layered structure of cortex and tonotopic structure of thalamus in the auditory pathway 听觉通路皮层层状结构和丘脑张力位结构的微电极同步记录

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146652

Hirokazu Takahashi, T. I. Shiramatsu, Kazusa Takahashi, T. Noda, R. Kanzaki, H. Nakahara

引用次数: 2

Spatial properties of network-mediated response of retinal ganglion cells to electric stimulation 视网膜神经节细胞对电刺激的网络介导反应的空间特性

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146608

M. Im, S. Fried

{"title":"Spatial properties of network-mediated response of retinal ganglion cells to electric stimulation","authors":"M. Im, S. Fried","doi":"10.1109/NER.2015.7146608","DOIUrl":"https://doi.org/10.1109/NER.2015.7146608","url":null,"abstract":"Retinal prosthetics consistently demonstrate the ability to restore limited visual perception to those blinded from outer retinal degenerative diseases. However, the performance of retinal implants is highly inconsistent and high-density arrays have proven only marginally better than much sparser ones suggesting that improving the overall quality of elicited vision may require more than just a high density electrode array. Existing devices are also implanted subretinally and epiretinally raising the possibility that electrode location also contributes to percept quality. Here, we compared the responses to stimulation from subretinal and epiretinal electrodes in the same cell. Use of a 4×4 subretinal electrode array allowed us to also compare responses to different numbers of electrodes activated simultaneously. Surprisingly, responses showed minimal dependence of both the electrode position (epiretinal vs. subretinal) as well as on electrode size (one vs. up to nine electrodes). However, when charge density considerations are implemented, such as those that are necessary during clinical use, the responses arising from smaller electrodes were less effective. This finding may help to explain the inconsistency between theoretical visual acuity and achievement in clinical testing with the high density implanted arrays.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132866834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Eigenvector centrality reveals the time course of task-specific electrode connectivity in human ECoG 特征向量中心性揭示了脑电中特定任务电极连接的时间过程

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146628

G. Newman, M. Fifer, H. Benz, N. Crone, N. Thakor

引用次数: 2

Modeling 3D tremor signals with a quaternion weighted Fourier Linear Combiner 用四元数加权傅立叶线性组合器建模三维地震信号

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146744

K. Adhikari, S. Tatinati, K. Veluvolu, K. Nazarpour

{"title":"Modeling 3D tremor signals with a quaternion weighted Fourier Linear Combiner","authors":"K. Adhikari, S. Tatinati, K. Veluvolu, K. Nazarpour","doi":"10.1109/NER.2015.7146744","DOIUrl":"https://doi.org/10.1109/NER.2015.7146744","url":null,"abstract":"Physiological tremor is an involuntary and rhythmic movement of the body specially the hands. The vibrations in hand-held surgical instruments caused by physiological tremor can cause unacceptable imprecision in microsurgery. To rectify this problem, many adaptive filtering-based methods have been developed to model the tremor to remove it from the tip of microsurgery devices. The existing tremor modeling algorithms such as the weighted Fourier Linear Combiner (wFLC) algorithm and its extensions operate on the x, y, and z dimensions of the tremor signals independently. These algorithms are blind to the dynamic couplings between the three dimensions. We hypothesized that a system that takes these coupling information into account can model the tremor with more accuracy compared to the existing methods. Tremor data was recorded from five novice subjects and modeled with a novel quaternion weighted Fourier Linear Combiner (QwFLC). We compared the modeling performance of the proposed QwFLC with that of the conventional wFLC algorithm. Results showed that QwFLC improves the modeling performance by about 20% at the cost of higher computational complexity.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121940818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4