# Posts tagged correlation

## Coherence correlation

- 27 May 2015
- neuroscience

*Note - you can find the nbviewer of this post here*

A big question that I’ve always wrestled with is the difference between correlation and coherence. Intuitively, I think of these two things as very similar to one another. Correlation is a way to determine the extent to which two variables covary (normalized to be between -1 and 1). Coherence is similar, but instead assesses “similarity” by looking at the similarity for two variables in frequency space, rather than time space.