2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)最新文献_第5页

How many people can control a motor imagery based BCI using common spatial patterns? 有多少人可以使用共同的空间模式来控制基于运动意象的脑机接口?

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146595

R. Ortner, J. Scharinger, A. Lechner, C. Guger

{"title":"How many people can control a motor imagery based BCI using common spatial patterns?","authors":"R. Ortner, J. Scharinger, A. Lechner, C. Guger","doi":"10.1109/NER.2015.7146595","DOIUrl":"https://doi.org/10.1109/NER.2015.7146595","url":null,"abstract":"EEG based Brain-Computer Interfaces (BCIs) often use evoked potentials (P300), steady state visual evoked potentials (SSVEP) or motor imagery (MI) for control strategies. This study investigated maximum and mean accuracy of a MI based BCI using Common Spatial Patterns (CSP). Twenty healthy people participated in the study and were equipped with 64 active EEG electrodes. They performed a training paradigm with 160 trials by imagining either left or right hand movement to set up a subject specific CSP filter to spatially filter the EEG data. Following that, two real-time runs with 80 trials were performed, which provided feedback to the subject. The real-time accuracy was then calculated for every subject, and finally a grand average accuracy of 80.7% was reached for the 20 subjects. One person reached a perfect classification result of 100%, 30% performed above 90% and one was below 59%. The results show that most people can use a MI based BCI after a brief training time if CSPs with 64 active electrodes are used. The method of CSP yields clearly better classification results compared to a bandpower approach. While more electrodes are needed for classification, this is less of a disadvantage with modern active electrodes.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"23 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":"121989822","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: 24

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146737

Reva E. Johnson, Konrad Paul Kording, L. Hargrove, J. Sensinger

引用次数: 6

Visual fatigue effects on Steady State Visual Evoked Potential-based Brain Computer Interfaces 视觉疲劳对稳态视觉诱发电位脑机接口的影响

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146562

Dimitra Makri, C. Farmaki, V. Sakkalis

引用次数: 22

Concurrent mental activities affect ERPs and impair performance of ERP-spellers 并发性心理活动影响erp拼写者的erp拼写表现

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146574

Yufeng Ke, Peiyuan Wang, Yuqian Chen, Bin Gu, Hongzhi Qi, Peng Zhou, Dong Ming

{"title":"Concurrent mental activities affect ERPs and impair performance of ERP-spellers","authors":"Yufeng Ke, Peiyuan Wang, Yuqian Chen, Bin Gu, Hongzhi Qi, Peng Zhou, Dong Ming","doi":"10.1109/NER.2015.7146574","DOIUrl":"https://doi.org/10.1109/NER.2015.7146574","url":null,"abstract":"Being one of the most popular and extensively studied ERP-BCI paradigm, ERP-spellers are commonly built and tested in ideal lab settings. However, in practical applications, users may encounter complex situations and various mental processing that have been believed to affect ERP signals. This kind of effect will probably induce a deteriorated performance of ERP-spellers. In the current study, a working memory task was interleaved within an RC ERP-speller paradigm to examine the effect of concurrent mental processing both on ERPs evoked by the stimuli of speller and its performance, especially when a speller is built under pure lab setting but used under complex mental activities in real life. The results show that the amplitude of N200, P360 and N550 were significantly affected by the working memory task. Moreover, the performance of ERP-spellers was significantly deteriorated by concurrently performing a working memory task, not only when a speller is trained and used in different settings, but also when a speller is both built and used in the same complex setting. These findings introduce a challenge for ERP-spellers to be used outside lab-settings and in daily work, especially when users are undergoing complex mental processing and experiencing heavy mental workload.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"2013 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":"127434392","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: 3

Distributed Intracortical Neural Interfacing: Network protocol design 分布式皮层内神经接口:网络协议设计

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146604

A. Zabihian, A. M. Sodagar, M. Sawan

引用次数: 0

Aging and attentional set shifting on WCST: An event-related EEG study 年龄与WCST注意集转移:一项事件相关的脑电图研究

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146817

L. S. Fernandes, D. Ferreira, P. Almeida, N. Dias

引用次数: 4

A virtual reality platform for safe evaluation and training of natural gaze-based wheelchair driving 基于自然注视的轮椅驾驶安全评估与训练虚拟现实平台

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146603

S. Ktena, W. Abbott, A. Faisal

{"title":"A virtual reality platform for safe evaluation and training of natural gaze-based wheelchair driving","authors":"S. Ktena, W. Abbott, A. Faisal","doi":"10.1109/NER.2015.7146603","DOIUrl":"https://doi.org/10.1109/NER.2015.7146603","url":null,"abstract":"The importance of ensuring user safety throughout the training and evaluation process of brain-machine interfaces is not to be neglected. In this study, a virtual reality software system was built with the intention to create a safe environment, where the performance of wheelchair control interfaces could be tested and compared. We use this to evaluate our eye tracking input methodology, a promising solution for hands-free wheelchair navigation, because of the abundance of control commands that it offers and its intuitive nature. Natural eye movements have long been considered to reflect cognitive processes and are highly correlated with user intentions. Therefore, the sequence of gaze locations during navigation is recorded and analyzed, in order to search and unveil patterns in saccadic movements. Moreover, this study compares different eye-based solutions that have previously been implemented, and proposes a new, more natural approach. The preliminary results on N = 6 healthy subjects indicate that the proposed free-view solution leads to 18.4% faster completion of the task (440 sec) benchmarked against a naive free-view approach.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"71 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":"128899292","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: 39

A user-friendly wearable single-channel EOG-based human-computer interface for cursor control 一个用户友好的可穿戴的单通道eog为基础的人机界面光标控制

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146685

A. Ang, Zhiguo Zhang, Y. Hung, J. Mak

引用次数: 29

Deep brain stimulation protocols that mirror endogenous rhythms show increased efficacy at terminating seizures 反映内源性节律的深部脑刺激方案在终止癫痫发作方面显示出更高的功效

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146612

Tiwalade Sobayo, D. Mogul

{"title":"Deep brain stimulation protocols that mirror endogenous rhythms show increased efficacy at terminating seizures","authors":"Tiwalade Sobayo, D. Mogul","doi":"10.1109/NER.2015.7146612","DOIUrl":"https://doi.org/10.1109/NER.2015.7146612","url":null,"abstract":"Deep brain stimulation (DBS) is a potentially potent means for disrupting the aberrant rhythms that arise during a seizure. However, current DBS strategies typically employed are formulated a priori and do not reflect dynamics within the brain during ictogenesis which may severely limit stimulation efficacy. This study investigated how DBS could be improved using endogenous dynamics to inform stimulation protocols. Multi-site brain dynamics within the circuit of Papez was calculated in a chronic rat limbic epilepsy model. Stimulation/recording electrodes were placed in the CA3 region of both hippocampi and in the anteromedial nucleus of the thalamus. Deconvolution of signals using empirical mode decomposition and coherence analysis were used to identify key dynamics as seizures progressed. Synchronization of field potentials across sites occurred as both spontaneous and evoked seizures naturally terminated. The location and frequency of synchrony varied between subjects suggesting that endogenous rhythms during natural seizure termination may vary in humans as well. DBS efficacy was significantly more effective at stopping seizures when the frequency of multisite synchronized stimulation reflected endogenous synchrony dynamics observed in each subject. Thus, tailoring DBS protocols to individual endogenous rhythms that may represent how brains naturally resolve epileptic seizures could play a critical role in improving overall efficacy of this potentially important therapy.","PeriodicalId":137451,"journal":{"name":"2015 7th International IEEE/EMBS Conference on Neural Engineering (NER)","volume":"283 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":"132093057","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

Optimal stimulus waveforms for eliciting a spike: How close is the spike-triggered average? 引发峰值的最佳刺激波形:峰值触发的平均值有多接近?

2015 7th International IEEE/EMBS Conference on Neural Engineering (NER) Pub Date : 2015-04-22 DOI: 10.1109/NER.2015.7146647

Joshua Chang, D. Paydarfar

引用次数: 2