2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)最新文献_第6页

A point process approach to encode tactile afferents 一种编码触觉传入的点处理方法

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146626

P. Kasi, I. Birznieks, A. V. Schaik

{"title":"A point process approach to encode tactile afferents","authors":"P. Kasi, I. Birznieks, A. V. Schaik","doi":"10.1109/NER.2015.7146626","DOIUrl":"https://doi.org/10.1109/NER.2015.7146626","url":null,"abstract":"In daily activities, humans manipulate objects and do so with great precision. Empirical studies have demonstrated that signals encoded by mechanoreceptors facilitate the precise object manipulation in humans, however, little is known about the underlying mechanisms. Current models range from complex- they account for skin tissue properties-to simple regression fit. These models do not describe the dynamics of neural data well. Because experimental neural data is limited to spike instances, they can be viewed as point processes. We discuss the point process framework and use it to simulate neural data possessing behaviors similar to experimental neural data. The characteristics of neural data were identified via visualization and descriptive statistics based on the experimental data. Then we fit candidate models to the simulated data and perform goodness-of fit to assess how well the models perform. This type of analysis facilitates the mapping of neural data to stimulus. Given this mapping, we can generate a population of spike trains, and infer from them in order to recover the applied stimulus. The knowledge acquired may provide insight into some fundamental sensory mechanisms that are responsible for coordinating force components during object manipulation. We envisage that the knowledge may guide the design of sensorycontrolled biomedical devices and robotic manipulators.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"14 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":"130405407","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: 0

PCA-SIR: A new nonlinear supervised dimension reduction method with application to pain prediction from EEG PCA-SIR:一种新的非线性监督降维方法在脑电疼痛预测中的应用

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146796

Y. Tu, Y. Hung, Li Hu, Zhiguo Zhang

{"title":"PCA-SIR: A new nonlinear supervised dimension reduction method with application to pain prediction from EEG","authors":"Y. Tu, Y. Hung, Li Hu, Zhiguo Zhang","doi":"10.1109/NER.2015.7146796","DOIUrl":"https://doi.org/10.1109/NER.2015.7146796","url":null,"abstract":"Dimension reduction is critical in identifying a small set of discriminative features that are predictive of behavior or cognition from high-dimensional neuroimaging data, such as EEG and fMRI. In the present study, we proposed a novel nonlinear supervised dimension reduction technique, named PCA-SIR (Principal Component Analysis and Sliced Inverse Regression), for analyzing high-dimensional EEG time-course data. Compared with conventional dimension reduction methods used for EEG, such as PCA and partial least-squares (PLS), the PCA-SIR method can make use of nonlinear relationship between class labels (i.e., behavioral or cognitive parameters) and predictors (i.e., EEG samples) to achieve the effective dimension reduction (e.d.r.) directions. We applied the new PCA-SIR method to predict the subjective pain perception (at a level ranging from 0 to 10) from single-trial laser-evoked EEG time courses. Experimental results on 96 subjects showed that reduced features by PCA-SIR can lead to significantly higher prediction accuracy than those by PCA and PLS. Therefore, PCA-SIR could be a promising supervised dimension reduction technique for multivariate pattern analysis of high-dimensional neuroimaging data.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"9 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":"121322210","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

Changes in brain activity due to the sudden apparition of an obstacle during gait 因行走过程中突然出现障碍物而引起的大脑活动的变化

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146572

R. Salazar-Varas, Á. Costa, A. Úbeda, E. Iáñez, J. Azorín

引用次数: 5

Influence of external cues on synchronized Brain-Computer Interface based on movement related cortical potentials 外部线索对基于运动相关皮层电位的同步脑机接口的影响

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146556

Heiko Scheel, Ren Xu, N. Jiang, N. Mrachacz‐Kersting, K. Dremstrup, D. Farina

{"title":"Influence of external cues on synchronized Brain-Computer Interface based on movement related cortical potentials","authors":"Heiko Scheel, Ren Xu, N. Jiang, N. Mrachacz‐Kersting, K. Dremstrup, D. Farina","doi":"10.1109/NER.2015.7146556","DOIUrl":"https://doi.org/10.1109/NER.2015.7146556","url":null,"abstract":"Brain-Computer Interfacing is a promising approach to aid the rehabilitation process of patients suffering the consequences of neurological injuries. It has been shown in recent literature that a closed-loop setup utilizing the detection of movement-related cortical potentials (MRCP) to generate afferent feedback can efficiently help the stroke patients to regain or improve motor-abilities. The above study used the synchronized BCI paradigm, because the subject may not be able to perform the necessary motor tasks all by themselves. In synchronized BCI, a cue is presented to indicate the exact time for an imagination task that is used as a training session. It is not clear, whether or not the property of the presented cue has any influence on the resulting potentials, which is the subject of investigation in this work. The results suggest that different types of cues i.e. audio and visual, have a significant effect on the resulting MRCP. The MRCP from the auditory-based cue paradigm showed a significantly lager amplitude before Large Laplacian spatial filtering. Additionally, it was found that this typical filter might not be optimal for the auditory paradigm, as it significantly reduces the amplitude of the peaking activity of MRCP.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"123 8 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":"126269435","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: 5

Hybrid multimodal Deep Brain probe (DBS array) for advanced brain research 用于高级脑研究的混合多模态脑深部探针(DBS阵列)

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146614

D. A. Vajari, J. Ordonez, L. Furlanetti, M. Döbrössy, V. Coenen, T. Stieglitz

{"title":"Hybrid multimodal Deep Brain probe (DBS array) for advanced brain research","authors":"D. A. Vajari, J. Ordonez, L. Furlanetti, M. Döbrössy, V. Coenen, T. Stieglitz","doi":"10.1109/NER.2015.7146614","DOIUrl":"https://doi.org/10.1109/NER.2015.7146614","url":null,"abstract":"Clinical trials have recently shown that Deep Brain Stimulation (DBS) can be applied to treat psychiatric disorders (e.g. Parkinson's disease, depression or obsessive compulsive disorders (OCD)). However, the underlying mechanisms of these disorders, as well as the influence of electrical stimulation remain not fully understood. We present a hybrid multimodal deep brain probe made out of a thin-film polyimide electrode and flexible silicone rubber substrate. The engineered combination of two technologies resulted in a device as flexible as commercial DBS probes, but including the benefits from thin-film technology such as higher contact density, high resolution in fabrication and capability of applying various coatings for specific applications. Preliminary studies showed that the concept of a hybrid probe is effective and promising. The prototyped samples were stressed mechanically on the basis of bending tests for implantable medical devices (EN 45502-2-3) in which, no failure was observed even after 150,000 bending cycles and storage in saline solution over 150 days. Usage of ceramic micro-adaptors allowed a stable mechanical decoupling between the wires and the thin-film device. Implementing biosensors into the deep brain probe, i.e. electrochemical sensors to monitor neurotransmitters, can be one of the possibilities provided by the proposed probe. High channel counts as well as feasibility to perform instantaneous monitoring of neurological event is distinguished as a key point towards addressing many unanswered questions, e.g. raveling the underlying neurocircuitry of psychiatric diseases, and hence, paving the way for more efficient treatment approaches.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"98 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":"126089076","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: 1

Activity-dependent regulation decreases metabolic cost in the auditory brainstem 活动依赖性调节降低了听觉脑干的代谢成本

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146622

Christophe B. Michel, B. Graham

引用次数: 0

Objective assessment of optimal group delays in cochlear implants 人工耳蜗最佳群体延迟的客观评价

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146715

S. Zirn, S. Arndt, T. Wesarg

{"title":"Objective assessment of optimal group delays in cochlear implants","authors":"S. Zirn, S. Arndt, T. Wesarg","doi":"10.1109/NER.2015.7146715","DOIUrl":"https://doi.org/10.1109/NER.2015.7146715","url":null,"abstract":"The human auditory periphery is a complex mechano-electrical system that transduces sound waves into nerve action potentials. In this sensory modality sound conduction to and frequency analysis in the cochlea produce frequency-dependent signal propagation delays. A cochlear implant (CI) is a neural prosthesis that replaces the peripheral auditory system partially by stimulating the auditory nerve electrically. This modality is in turn accompanied by artificial signal transmission delays. This study deals with the question how well the timing of neural excitation in these two modalities fit one another. For this purpose, we investigated wave V latencies of auditory brainstem responses evoked either acoustically (ABR) or electrically via the CI (EABR). The sum of delays consisting of CI signal processing and EABR wave V latencies allowed an estimation of the entire CI-channel-specific delay. We compared these values with ABR wave V latencies measured in normal hearing listeners in different frequency bands. As EABR wave V latencies were shorter than those evoked acoustically, appropriate values for delay elements (FIR group delays) in the CI system were determined and compared with the already implemented group delays. Optimized interaural stimulation timing in unilateral deaf subjects provided with a CI reduces the need for central auditory compensation and can improve speech recognition.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"98 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":"116731630","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: 2

Design of a novel closed-loop deep brain stimulation system for Parkinson's disease and obsessive-compulsive disorder 一种新型闭环脑深部刺激系统的设计，用于帕金森病和强迫症

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146759

S. Karamintziou, B. Piallat, S. Chabardès, M. Polosan, O. David, G. L. Tsirogiannis, N. Deligiannis, P. Stathis, G. Tagaris, E. Boviatsis, D. Sakas, Georgia E. Polychronaki, Konstantina S. Nikita

引用次数: 5

Multimodal virtual reality platform for the rehabilitation of phantom limb pain 多模态虚拟现实平台用于幻肢痛的康复

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146741

Naoki Wake, Y. Sano, R. Oya, M. Sumitani, S. Kumagaya, Y. Kuniyoshi

{"title":"Multimodal virtual reality platform for the rehabilitation of phantom limb pain","authors":"Naoki Wake, Y. Sano, R. Oya, M. Sumitani, S. Kumagaya, Y. Kuniyoshi","doi":"10.1109/NER.2015.7146741","DOIUrl":"https://doi.org/10.1109/NER.2015.7146741","url":null,"abstract":"Amputees usually perceive vivid awareness of their lost body parts after the amputation (phantom limbs). Phantom limb pain (PLP) is intense pain that is felt in the phantom limb. The mechanism of PLP is still unclear, but the major hypothesis is that it is derived from dysfunction of the brain. There are a few neurorehabilitation techniques using a mirror or virtual reality (VR) that present the visual image of a phantom limb to the patients, and this produce the movement perception of their phantom limb. Here, we developed a multimodal (visual, auditory, and tactile) VR system to obtain the perception of voluntary phantom limb movements. We applied this system to five PLP patients for three tactile feedback conditions as a pilot study. In conclusion, four of the five patients reported pain amelioration, up to 86% decrease in the tactile feedback condition. In addition, our results demonstrated that the best suited condition of feedback-sense modalities depends on the patient. These results suggest that this system can be applied to a rehabilitation platform to offer flexible neurorehabilitation regimens for each patient.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"34 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":"122483395","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: 32

Evaluating performance on older individuals using a fMRI protocol for Wisconsin Card Sorting Task 使用功能磁共振成像协议评估老年人威斯康星卡片分类任务的表现

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146807

Joana Festa, J. Soares, P. Marques, N. Santos, N. Sousa, N. Dias

引用次数: 0