H. Chan, Ling-Fu Meng, Pei-Kuang Chao, Ming-An Lin
The EEG coherence is beneficial to investigate cortical connectivity of different brain regions in response to specific events. Recently, the wavelet-based coherence is suggested for this purpose due to that it can capture the time-varying characteristics of signals from which the Fourier transform would suffer. However, the quantitative comparison between Fourier and wavelet-based coherence is less addressed. In this paper we used simulated signals under various signal-to-noise ratios and real evoked electrophysiological signals to assess the coherence estimation of these two methods. Our results showed that Fourier-based coherence is more affected by the Guassian noise than wavelet-based coherence, in particular at the frequency band of 18-50 Hz
{"title":"Coherence Analyses of Event-Related Potentials Using Fourier and Wavelet Transforms","authors":"H. Chan, Ling-Fu Meng, Pei-Kuang Chao, Ming-An Lin","doi":"10.1109/CNE.2007.369750","DOIUrl":"https://doi.org/10.1109/CNE.2007.369750","url":null,"abstract":"The EEG coherence is beneficial to investigate cortical connectivity of different brain regions in response to specific events. Recently, the wavelet-based coherence is suggested for this purpose due to that it can capture the time-varying characteristics of signals from which the Fourier transform would suffer. However, the quantitative comparison between Fourier and wavelet-based coherence is less addressed. In this paper we used simulated signals under various signal-to-noise ratios and real evoked electrophysiological signals to assess the coherence estimation of these two methods. Our results showed that Fourier-based coherence is more affected by the Guassian noise than wavelet-based coherence, in particular at the frequency band of 18-50 Hz","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132763541","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}
M. Schuettler, C. Henle, J. Ordonez, G. Suaning, N. Lovell, T. Stieglitz
Five methods of micro-patterning silicone rubber, (polydimethylsiloxane, PDMS) are reviewed. Three of the methods are experimentally evaluated in order to find the most suitable process parameters to expose electrode sites and contact pads of PDMS-embedded platinum structures for fabricating micro-electrode arrays. Rated by applicability, type of PDMS involved (implantable-grade required), achievable aspect ratio (AR) and minimum feature size (FS), the feasibility of two methods was demonstrated: laser-ablation, using a Nd:YAG laser (AR = 5.3, FS > 100 mum) and dry etching using a reactive ion etcher (AR = 10, FS > 10 mum).
{"title":"Patterning of Silicone Rubber for Micro-Electrode Array Fabrication","authors":"M. Schuettler, C. Henle, J. Ordonez, G. Suaning, N. Lovell, T. Stieglitz","doi":"10.1109/CNE.2007.369610","DOIUrl":"https://doi.org/10.1109/CNE.2007.369610","url":null,"abstract":"Five methods of micro-patterning silicone rubber, (polydimethylsiloxane, PDMS) are reviewed. Three of the methods are experimentally evaluated in order to find the most suitable process parameters to expose electrode sites and contact pads of PDMS-embedded platinum structures for fabricating micro-electrode arrays. Rated by applicability, type of PDMS involved (implantable-grade required), achievable aspect ratio (AR) and minimum feature size (FS), the feasibility of two methods was demonstrated: laser-ablation, using a Nd:YAG laser (AR = 5.3, FS > 100 mum) and dry etching using a reactive ion etcher (AR = 10, FS > 10 mum).","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132997062","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}
L. Gouyet, G. Cathébras, S. Bernard, D. Guiraud, Y. Bertrand
Sensory information coming from natural sensors and being propagated on afferent nerve fibers could be used as feedback for a more efficient closed-loop control of a functional electrical stimulation system. In order to extract and separate these signals according to their nerve fascicule origins, we propose a new architecture of a multipolar cuff electrode and an optimized integrated acquisition circuit. Concerning the electrode, we propose a specific configuration using a large number of poles in order to both reject parasitic signals, such as electromyogram and provide a maximum of recording channels in order to help the signal localization inside the nerve. Moreover, specific low-level analog signal processing was designed to extract the expected low-amplitude signal from its noisy environment. This signal processing is implemented in an ASIC that has to be implanted close to the electrode to achieve the best signal-to-noise ratio
{"title":"A New Configuration of Multipolar Cuff Electrode and Dedicated IC for Afferent Signal Recording","authors":"L. Gouyet, G. Cathébras, S. Bernard, D. Guiraud, Y. Bertrand","doi":"10.1109/CNE.2007.369739","DOIUrl":"https://doi.org/10.1109/CNE.2007.369739","url":null,"abstract":"Sensory information coming from natural sensors and being propagated on afferent nerve fibers could be used as feedback for a more efficient closed-loop control of a functional electrical stimulation system. In order to extract and separate these signals according to their nerve fascicule origins, we propose a new architecture of a multipolar cuff electrode and an optimized integrated acquisition circuit. Concerning the electrode, we propose a specific configuration using a large number of poles in order to both reject parasitic signals, such as electromyogram and provide a maximum of recording channels in order to help the signal localization inside the nerve. Moreover, specific low-level analog signal processing was designed to extract the expected low-amplitude signal from its noisy environment. This signal processing is implemented in an ASIC that has to be implanted close to the electrode to achieve the best signal-to-noise ratio","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130841986","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}
Recently, we have shown that the wavelet phase synchronization stability of single sweeps of auditory late responses (ALRs) allows for the quantification of the tinnitus decompensation. Our underlying model of adaptive resonance and spotlighting of attention links the synchronization stability directly to neural correlates of attention reflected in ALRs. Correlates of this attentional mechanism are further investigated in this study by using an auditory paradigm based on maximum entropy principle in healthy subjects. In particular, we show that the wavelet phase synchronization of ALR single sweeps allows for a direct online monitoring of phase locked auditory attention. Such an online monitoring cannot be implemented by known procedures as they are based on large-scale averages of ALRs. Apart from the objective quantification of the tinnitus decompensation, this measure can be used in every online and real time neurofeedback therapeutic approach where a direct stimulus locked attention monitoring is mandatory
{"title":"Extraction of Auditory Attention Correlates in Single Sweeps of Cortical Potentials by Maximum Entropy Paradigms and its Application","authors":"Y. Low, F. I. Corona-Strauss, P. Adam, D. Strauss","doi":"10.1109/CNE.2007.369711","DOIUrl":"https://doi.org/10.1109/CNE.2007.369711","url":null,"abstract":"Recently, we have shown that the wavelet phase synchronization stability of single sweeps of auditory late responses (ALRs) allows for the quantification of the tinnitus decompensation. Our underlying model of adaptive resonance and spotlighting of attention links the synchronization stability directly to neural correlates of attention reflected in ALRs. Correlates of this attentional mechanism are further investigated in this study by using an auditory paradigm based on maximum entropy principle in healthy subjects. In particular, we show that the wavelet phase synchronization of ALR single sweeps allows for a direct online monitoring of phase locked auditory attention. Such an online monitoring cannot be implemented by known procedures as they are based on large-scale averages of ALRs. Apart from the objective quantification of the tinnitus decompensation, this measure can be used in every online and real time neurofeedback therapeutic approach where a direct stimulus locked attention monitoring is mandatory","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129771033","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}
The electrode-tissue interface is of principal importance in neuroprosthesis. Indeed the successes of the cochlear implant and other therapeutic devices are directly attributable to the design and fabrication techniques of their interfaces with neural tissue, that is, the electrode or electrode array. Traditional fabrication techniques are often labor-intensive and do not lend themselves to automation thereby increasing the cost of the electrode, and owing to fabrication variability, potentially compromising the reliability of the devices incorporating them. Exacerbating the difficulties in electrode fabrication further is the fact that only a handful of materials have been demonstrated to be biologically inert. These same materials are often among the most difficult to utilize in the fabrication of neural electrodes. In the present paper, a new methodology for automated fabrication of high-density electrode arrays is presented. Using exclusively biologically-inert raw materials, laser machining techniques combined with multiple layer structuring is shown to achieve feature sizes of the order of 25 mum. As an illustrative example, a 98 electrode array for interfacing with surviving retinal tissue through a visual prosthesis for the blind is presented. Overall dimensions of the array are of the order of 8.7 times 9.4 mm, consistent with approximately 25 degrees of visual field.
{"title":"Fabrication of multi-layer, high-density micro-electrode arrays for neural stimulation and bio-signal recording","authors":"G. Suaning, M. Schuettler, J. Ordonez, N. Lovell","doi":"10.1109/CNE.2007.369597","DOIUrl":"https://doi.org/10.1109/CNE.2007.369597","url":null,"abstract":"The electrode-tissue interface is of principal importance in neuroprosthesis. Indeed the successes of the cochlear implant and other therapeutic devices are directly attributable to the design and fabrication techniques of their interfaces with neural tissue, that is, the electrode or electrode array. Traditional fabrication techniques are often labor-intensive and do not lend themselves to automation thereby increasing the cost of the electrode, and owing to fabrication variability, potentially compromising the reliability of the devices incorporating them. Exacerbating the difficulties in electrode fabrication further is the fact that only a handful of materials have been demonstrated to be biologically inert. These same materials are often among the most difficult to utilize in the fabrication of neural electrodes. In the present paper, a new methodology for automated fabrication of high-density electrode arrays is presented. Using exclusively biologically-inert raw materials, laser machining techniques combined with multiple layer structuring is shown to achieve feature sizes of the order of 25 mum. As an illustrative example, a 98 electrode array for interfacing with surviving retinal tissue through a visual prosthesis for the blind is presented. Overall dimensions of the array are of the order of 8.7 times 9.4 mm, consistent with approximately 25 degrees of visual field.","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130126791","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}
H. Jimison, M. Pavel, K. Wild, P. Bissell, J. McKanna, D. Blaker, D. Williams
Traditional methods of cognitive assessment using neuropsychological tests are expensive and time consuming. These methods do not lend themselves to frequent monitoring and trend detection. In this paper, we describe a method for using enjoyable computer games with embedded cognitive metrics to monitor within-subject trends in performance. We have created a set of 9 computer games to specifically measure various cognitive domains that are normally administered in routine neuropsychological assessments, such as verbal fluency, working memory, attention, and planning. Although the measurements are not taken in a controlled setting, there are distinct advantages to being able to collect data frequently in a naturalistic setting. Routine measurements over time allow us to detect trends in various aspects of cognitive performance and avoid biases due to education, culture, and experience.
{"title":"A Neural Informatics Approach to Cognitive Assessment and Monitoring","authors":"H. Jimison, M. Pavel, K. Wild, P. Bissell, J. McKanna, D. Blaker, D. Williams","doi":"10.1109/CNE.2007.369768","DOIUrl":"https://doi.org/10.1109/CNE.2007.369768","url":null,"abstract":"Traditional methods of cognitive assessment using neuropsychological tests are expensive and time consuming. These methods do not lend themselves to frequent monitoring and trend detection. In this paper, we describe a method for using enjoyable computer games with embedded cognitive metrics to monitor within-subject trends in performance. We have created a set of 9 computer games to specifically measure various cognitive domains that are normally administered in routine neuropsychological assessments, such as verbal fluency, working memory, attention, and planning. Although the measurements are not taken in a controlled setting, there are distinct advantages to being able to collect data frequently in a naturalistic setting. Routine measurements over time allow us to detect trends in various aspects of cognitive performance and avoid biases due to education, culture, and experience.","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"518 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116240161","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}
H. Takahashi, M. Uchihara, A. Funamizu, Rio Yokota, R. Kanzaki
The artificial neural network (ANN) can translate spatio-temporal neural activities into the corresponding test stimuli. ANN with a simple structure and generalization ability has a potential to reflect a prominent feature of the computation mechanism in the brain. In the present work, we propose a novel analysis using ANN. In the constructed ANN, neural activities in the primary auditory cortex (A1) served as the inputs, and time-series changes of test frequencies of tones served as the targets. We then investigated input-output relationships of hidden layer neurons. Consequently, we found that some hidden layer neurons tuned the frequency preference by excitatory inputs from all frequency regions, while others tuned with inhibitory inputs from a low frequency region. These results suggest that neural activities in A1 form the frequency preference with excitatory inputs from all frequency pathways and inhibitory inputs from a low frequency pathway. This suggestion is consistent with physiological facts, thus proving the feasibility of the proposed analysis.
{"title":"Analysis of Spatio-temporal Cortical Activity with Artificial Neural Network","authors":"H. Takahashi, M. Uchihara, A. Funamizu, Rio Yokota, R. Kanzaki","doi":"10.1109/CNE.2007.369749","DOIUrl":"https://doi.org/10.1109/CNE.2007.369749","url":null,"abstract":"The artificial neural network (ANN) can translate spatio-temporal neural activities into the corresponding test stimuli. ANN with a simple structure and generalization ability has a potential to reflect a prominent feature of the computation mechanism in the brain. In the present work, we propose a novel analysis using ANN. In the constructed ANN, neural activities in the primary auditory cortex (A1) served as the inputs, and time-series changes of test frequencies of tones served as the targets. We then investigated input-output relationships of hidden layer neurons. Consequently, we found that some hidden layer neurons tuned the frequency preference by excitatory inputs from all frequency regions, while others tuned with inhibitory inputs from a low frequency region. These results suggest that neural activities in A1 form the frequency preference with excitatory inputs from all frequency pathways and inhibitory inputs from a low frequency pathway. This suggestion is consistent with physiological facts, thus proving the feasibility of the proposed analysis.","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134357656","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}
The rationale for this research is to address the problem of long-term function of neural interfaces. The approach followed is surface modification of traditional electrode materials using electrically conducting polymers and biological factors with the aim of establishing a functional neural interface between stimulating electrode and neural tissue. Polypyrrole films can be relatively flexible but have insufficient electrochemical stability to be used in long-term neuroprosthetic implants. Polyethylene dioxythiophene films have good electrochemical stability but are very difficult to handle and are subject to failure by brittle fracture. The specific aim of this study was to evaluate layering of different conductive polymers for optimization of film properties. Layering of the films was shown to produce composite materials with properties superior to those of the individual components. Conductivity of the layered film was between that of each film alone and mechanical stability was similar to the more flexible PPy films. Neurite outgrowth was improved on the layered film. These layered films show promise as conductive coatings for electrodes.
{"title":"Novel Neural Interface for Vision Prosthesis Electrodes: Improving Electrical and Mechanical Properties through Layering","authors":"R. Green, L. Poole-Warren, N. Lovell","doi":"10.1109/CNE.2007.369621","DOIUrl":"https://doi.org/10.1109/CNE.2007.369621","url":null,"abstract":"The rationale for this research is to address the problem of long-term function of neural interfaces. The approach followed is surface modification of traditional electrode materials using electrically conducting polymers and biological factors with the aim of establishing a functional neural interface between stimulating electrode and neural tissue. Polypyrrole films can be relatively flexible but have insufficient electrochemical stability to be used in long-term neuroprosthetic implants. Polyethylene dioxythiophene films have good electrochemical stability but are very difficult to handle and are subject to failure by brittle fracture. The specific aim of this study was to evaluate layering of different conductive polymers for optimization of film properties. Layering of the films was shown to produce composite materials with properties superior to those of the individual components. Conductivity of the layered film was between that of each film alone and mechanical stability was similar to the more flexible PPy films. Neurite outgrowth was improved on the layered film. These layered films show promise as conductive coatings for electrodes.","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133961039","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}
C. Gong, Kai-Wen Yao, Chun-Hsien Su, Sheng-Yang Ho, Chi-Tong Hong, Tong-Yi Chen, Jyun-Wei Lu, Yin Chang, M. Shiue
The state-of-the-art prosthetic devices have been successfully approved as critical approach to provide at least partial reconstruction for physiological diseases by replacing a damaged tissue or organ. Invariably, they are always aspired to have lower power consumption despite the battery or the battery-less implementation. This paper presents an energy-aware baseband circuitry concerned about the next-generation multi-channel prostheses especially for the retinal implant in which an inductive-coil link is preferred to fulfill the need of power delivery for providing safer tissue-machine interfaces in the intraocular environment. The extended lifetime for those of the battery-dependent implants can be also achieved by adopting such a power-efficient scheme. The proposed system is a 16-channel-based on-electrode multiplexing design, which can deal with up to 40 frame/sec with 240 stimulus channels in mode I and 3 times the resolution at the same frame rate in mode II under a carrier frequency of 2 MHz. A prototypical chip was implemented in a 0.18mum CMOS process and the experiment has also been carried out as proof of concept.
最先进的假肢装置已经成功地被批准为通过替换受损的组织或器官来提供至少部分重建生理疾病的关键方法。尽管有电池或无电池的实现，他们总是渴望有更低的功耗。本文提出了一种能量感知基带电路，用于下一代多通道假体，特别是视网膜植入物，其中电感线圈链路优先满足在眼内环境中提供更安全的组织-机器接口的电力传输需求。采用这种节能方案也可以延长依赖电池的植入物的使用寿命。所提出的系统是一种基于16通道的电极上复用设计，在模式I下可以处理高达40帧/秒的240个刺激通道，在载波频率为2 MHz的模式II下，以相同帧速率处理的分辨率是其3倍。在0.18 μ m CMOS工艺中实现了原型芯片，并进行了实验作为概念验证。
{"title":"A Fully Integrated Energy-Aware Baseband Circuitry for Next-Generation Retinal Implants","authors":"C. Gong, Kai-Wen Yao, Chun-Hsien Su, Sheng-Yang Ho, Chi-Tong Hong, Tong-Yi Chen, Jyun-Wei Lu, Yin Chang, M. Shiue","doi":"10.1109/CNE.2007.369624","DOIUrl":"https://doi.org/10.1109/CNE.2007.369624","url":null,"abstract":"The state-of-the-art prosthetic devices have been successfully approved as critical approach to provide at least partial reconstruction for physiological diseases by replacing a damaged tissue or organ. Invariably, they are always aspired to have lower power consumption despite the battery or the battery-less implementation. This paper presents an energy-aware baseband circuitry concerned about the next-generation multi-channel prostheses especially for the retinal implant in which an inductive-coil link is preferred to fulfill the need of power delivery for providing safer tissue-machine interfaces in the intraocular environment. The extended lifetime for those of the battery-dependent implants can be also achieved by adopting such a power-efficient scheme. The proposed system is a 16-channel-based on-electrode multiplexing design, which can deal with up to 40 frame/sec with 240 stimulus channels in mode I and 3 times the resolution at the same frame rate in mode II under a carrier frequency of 2 MHz. A prototypical chip was implemented in a 0.18mum CMOS process and the experiment has also been carried out as proof of concept.","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"186 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132975903","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}
Using a simple motor task, we demonstrate that the classic gamma range contains behavioral inflections within its power spectrum that inhibit its use as a generic feature for control in brain computer interfaces. We characterize this behavioral junction, J0, and call for a more appropriate designation of behaviorally useful spectral change, which we denote the chi-band (chi-band)
{"title":"The Behavioral Split in the Gamma Band","authors":"K. Miller, Rajesh P. N. Rao, J. Ojemann","doi":"10.1109/CNE.2007.369710","DOIUrl":"https://doi.org/10.1109/CNE.2007.369710","url":null,"abstract":"Using a simple motor task, we demonstrate that the classic gamma range contains behavioral inflections within its power spectrum that inhibit its use as a generic feature for control in brain computer interfaces. We characterize this behavioral junction, J0, and call for a more appropriate designation of behaviorally useful spectral change, which we denote the chi-band (chi-band)","PeriodicalId":427054,"journal":{"name":"2007 3rd International IEEE/EMBS Conference on Neural Engineering","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133139744","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}
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