MATLAB工具集：推动BCI研究的最新进展

需积分: 12 47 浏览量更新于2024-07-03 收藏 1.18MB PDF 举报

在《(B+H)CI:人类在脑机接口与人机交互中的大脑》(Desney S Tan 和 Anton Nijholt 主编)一书中，"MATLAB-Based Tools for BCI Research" 这篇文章详细探讨了目前为脑机接口(Brain-Computer Interface, BCI)研究提供支持的软件工具，特别强调了MATLAB这一平台的重要性。MATLAB是一种广泛应用于科学计算和数据分析的高级编程语言，其强大的数值计算能力和可视化功能使其在脑电图(EEG)信号处理和机器学习算法方面具有显著优势。文章首先概述了市面上各种独立软件和基于MATLAB的工具，这些工具涵盖了BCI研究的关键环节，如数据采集、预处理、特征提取、以及实时反馈控制。这些工具对于研究人员来说是至关重要的，因为它们能够简化复杂的分析流程，提高实验效率，并且使得跨学科合作成为可能。接下来，作者重点介绍了两种MATLAB为中心的解决方案。第一种可能是特定的MATLAB库或套件，比如FieldTrip或Brainstorm，这两个工具集提供了完整的EEG分析工具链，包括信号滤波、肌电图(EMG)分析、事件相关电位(ERP)分析等功能，有助于科学家们解析和理解大脑活动与外部输入之间的关系。第二种可能是MATLAB脚本或算法集，用于开发自定义的BCI应用，比如通过机器学习算法训练和优化BCI分类器，如支持向量机(SVM)、深度学习模型等，以提高信号识别的准确性和适应性。这些定制化的工具可以针对特定的研究问题进行优化，满足不同研究团队的需求。此外，文章还可能讨论了MATLAB的易用性、灵活性和可扩展性，如何通过集成其他开源工具和资源，如神经元模型模拟器和人机交互设计工具，使得MATLAB成为BCI研究的一个强大平台。同时，它也强调了如何利用MATLAB的图形用户界面(GUI)来实现非专业人员也能理解和操作的BCI系统，促进科研成果的普及。总结来说，这篇文章为BCI研究者提供了一个关于MATLAB在该领域中广泛应用的全面指南，展示了其作为研究工具的优势，并为后续的软件开发和实验设计提供了宝贵的参考。通过MATLAB，研究人员能够在数据处理、模型开发到实际应用的各个环节中提升研究效率和创新性。

one sample or one block of data at a time, and then populate data blocks into a

larger data matrix of dimensions channels-by-samples. This data matrix may then

be processed under MATLAB using feature extraction and translation algorithms.

However, since MATLAB is a single-threaded application, collecting the

continuously streaming data and processing it in near-real time may be

challenging. Imagine acquiring samples of the EEG data stream and then

performing a CPU-intensive computation on those samples, e.g. overlapping fast

Fourier transforms (FFTs). During the time that MATLAB requires to compute

each FFT, new data arriving in the EEG stream from the acquisition system may

be ignored. To allow for full control of the timing of a processing pipeline in

MATLAB, incoming data must be buffered to avoid gaps whenever repeated

computation is taking place. While the low-level TCP/IP network stack of the

operating system will buffer the data for some time, the duration that the data

remains in the network stack buffer cannot be guaranteed.

Therefore, instead of having MATLAB itself read one sample at a time

from the data stream, another standalone application or thread should read the

incoming samples and copy them into a fixed-length or data-adaptive circular

buffer. MATLAB can then read new data from this buffer at any time appropriate,

e.g., after completion of each computation. Successively separating the buffering

of the data stream from computation on segments of that data stream depends on a

having fast interface between MATLAB and the buffering software, so that little

time is lost in copying data from the buffer into MATLAB memory. In the next

sections we present two MATLAB-centered solutions that use this approach:

FieldTrip and DataSuite. FieldTrip aims only to provide a usable interface to a

single online data stream, while DataSuite in addition allows synchronization of

dissimilar data streams, including streams output by online computational clients

running on the same or different machines on the network, plus integrated,

flexible, and if desired distributed stimulus control.

FieldTrip. The FieldTrip toolbox (R. Oostenveld,

www.ru.nl/neuroimaging/fieldtrip) for EEG/MEG analysis under MATLAB

provides an open-source implementation of a realtime data buffering scheme. The

FieldTrip buffer is implemented as a network transparent TCP server, which

allows the acquisition client to stream EEG data to it sample by sample or in small

blocks, while at the same time any data that is present in the buffer can be

retrieved and processed by another application. The buffer is implemented as a

multi-threaded application in C/C++, allowing multiple clients to connect

simultaneously to read/write data and event codes.

The FieldTrip buffer may be used more generally to communicate

between separate applications. One application program is responsible for data

acquisition, writing the data (and optionally also event codes) to the buffer.

Another application can connect to the server to read some of the data and event

codes (typically, the most recent), and may optionally also write new event codes

(e.g., as the output of a classification algorithm) into the same buffer. Source code

for the buffering can be integrated into any EEG/MEG acquisition or analysis

system, first writing the header information and describing the number of channels

and sampling frequency, then delivering the stream of data and/or event codes.

剩余18页未读，继续阅读

u010070573

粉丝: 2
资源: 5

MATLAB工具集：推动BCI研究的最新进展

Matlab实现离散控制与BCI环境搭建指南

脑-机接口(BCI)系统解析：自发式与诱发式

MATLAB脑机接口工具箱：实现BCI的关键技术

matlab精度检验代码-Brain-Computer-Interface-BCI-based-on-Steady-State-Visual-

Low-Cost-EEG-Based-BCI:基于低成本脑电图的脑机接口

Enhanced Performance by Time-Frequency-Phase Feature for EEG-Based BCI Systems

Machine-learning-based-detection-ofdeliberately-generated-artifacts-inERP-BCI-experiments:与神经信息处理小组（柏林工业大学）合作的与AngeloGroß硕士论文相关的项目

中值滤波代码matlab-BCI_Summer-17:BCI_Summer-17

离散控制Matlab代码-bci:bci

MATLAB toolbox for Brain-Computer Interfacing (BCI).zip

最新资源