Common Spatial Patterns BCISierningstrasse, GmbhTel, Europe
共空间模式(Common Spatial Pattern, CSP)是一种对两分类任务下的空域滤波特征提取算法,能够从多通道的脑机接口数据里面提取出每一类的空间分布成分。公共空间模式算法的基本原理是利用矩阵的对角化,找到一组最优空间滤波器进行投影,使得两类信号的方差值差异最大化,从而得到具有较高区分度的特征向量。 CSP的研究进展...
Spatial Filtering: Common Spatial Patterns The method of common spatial patterns (CSP) designs spatial filters in such a way that the variances in the filtered time series data are optimal (in the least squares sense) for discrimination (Koles, 1991; Müller-Gerking et al., 1999; Guger et ...
Regularized common spatial patterns with subject-to-subject transfer of EEG signals In the context of brain-computer interface (BCI) system, the common spatial patterns (CSP) method has been used to extract discriminative spatial filters f... M Cheng,Z Lu,H Wang - 《Cognitive Neurodynamics》 被...
A novel quaternion-valued common spatial patterns (QCSP) algorithm is introduced to model co-channel coupling of multi-dimensional processes. To cater for the generality of quaternion-valued non-circular data, we propose a generalised QCSP (G-QCSP) which incorporates the information on power differen...
The spatial patterns are analogous to those observed in Rhizobium-common bean interactions and suggest that the local adaptation of rhizobia to common bean may have shaped the spatial differences in the phage-rhizobium interactions. Through isolation-by-adaptation, local adaptation may reinforce spatial ...
Next, we estimate commonness patterns in each of our three study regions: Africa, Amazonia and Southeast Asia. We extrapolate log series fits to the empirical Africa, Amazonia and Southeast Asia datasets (Extended Data Fig. 4), including a correction to account for the clumped spatial occurrence...
Temporal and spatial patterns of common tern (Sterna-hirundo) foraging on the Wadden sea.Becker, P HFrank, DSudmann, S RBecker, P. H., Frank, D. & Sudmann, S. R. (1993) Temporal and spatial pattern of common tern (Sterna hirundo) foraging in the Wadden Sea. Oecologia 93: 389...
Recognizing Event-Related Desynchronization or Synchronization (ERD/ERS) patterns generated by motor imagery tasks is an important process in Brain-computer interfaces (BCI). One of the most well-known algorithms to extract the discriminative patterns is Common Spatial Patterns (CSP). It finds an opt...
The common spatial patterns (CSP) algorithm is often used in BCI. In this work we investigate how the CSP algorithm generalizes when using small training sets, how the performance changes over time, and how well CSP generalizes over persons. Our results indicate that the CSP algorithm severely ...