一个基于VEP的240个目标的BCI系统,采用窄带随机序列.
Yida Dong1,2, Li Zheng1, Weihua Pei1,2
1Key Laboratory of Solid-State Optoelectronics Information Technology, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, People's Republic of China.
Journal of neural engineering
|March 12, 2025
概括
本研究介绍了一种新型的脑计算机接口 (BCI),使用编码调制的视觉唤起潜能 (c-VEP) 来实现大量命令的高信息传输速率 (ITR). 该系统在线和线下实验中表现出强的性能,为更实用的BCI应用铺平了道路.
科学领域:
- 神经科学是一个神经科学.
- 生物医学工程 生物医学工程
- 计算机科学 计算机科学
背景情况:
- 大脑-计算机接口 (BCI) 对辅助技术至关重要.
- 高信息传输速率 (ITR) 和大型指令集是当前BCI系统的关键挑战.
- 代码调制的视觉唤起潜力 (c-VEP) BCI为提高性能提供了一个有希望的途径.
研究的目的:
- 开发一种能够处理广泛指令集的新型c-VEP BCI系统.
- 保持高性能指标,包括信息传输速率 (ITR).
- 为了应对在BCI中实现大量目标的高ITR的挑战.
主要方法:
- 一个新的c-VEP BCI系统,利用窄带随机序列作为视觉刺激.
- 一个基于卷积神经网络 (CNN) 的EEG2Code解码算法用于刺激序列预测.
- 进行了线下 (顺序范式) 和在线 (拼写任务) 实验.
主要成果:
- 离线实验平均准确率为87.66%,模拟ITR为260.14位/分钟.
- 在线实验表明准确率为76.27%,ITR为213.80位/分钟.
- 该系统支持基于VEP的BCI最大的已知指令集之一.
结论:
- 开发的c-VEP BCI系统代表了该领域的进步.
- 该系统表现出强大的性能,提供高精度和ITR.
- 这项工作有可能为更实用,更有效的脑电脑接口应用程序.
相关概念视频
Long-patch Base Excision Repair
Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are:
Next-generation Sequencing
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
The Antiviral System of Bacteria and Archaea: CRISPR
CRISPR stands for Clustered Regularly Interspaced Short Palindromic Repeats is a adaptive immune system found in bacteria and archaea that protects against viral infections. This system enables prokaryotic cells to identify, remember, and neutralize foreign genetic elements, primarily bacteriophages, by storing fragments of the invader’s DNA as a genetic memory.The CRISPR immune response begins during an initial infection. Cas (CRISPR-associated) proteins play a central role in this defense.
Automated Microbial Diagnostics
Automated diagnostic analyzers have transformed clinical microbiology by providing rapid and reliable methods for pathogen identification and antibiotic susceptibility testing. Among these systems, the Vitek 2 is widely used because it automates the traditionally labor-intensive processes of microbial identification (ID) and antibiotic susceptibility testing (AST), delivering standardized and timely results that are essential for effective patient care.Microbial Identification with ID CardsThe...


