Phase Difference of Two Time Series and Phase Lag Index

Question

Evan Haley 2020-7-1

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/557848-phase-difference-of-two-time-series-and-phase-lag-index

回答： Kaniska Samanta 2021-3-3

I am trying to calculate the Phase Lag Index of two time series recorded via EEG. The equation for PLI is described in this paper: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6871367/

The critical part of the equation is the phase difference, which I am not sure how to calculate in MATLAB. Any help would be appreciated!

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Kaniska Samanta 2021-3-3

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/557848-phase-difference-of-two-time-series-and-phase-lag-index#answer_638076

Hi,

you can simply perform hilbert transform to map those timeseries into phase signals to get instanteneous phase information by calling the function 'hilbert' in matlab. Then you can measure the phase difference by subtracting one phase signal from another.

Good luck !!!