# Granger Causallity
- [Autoregressive](Autoregressive.md)
- If significant then electrode Granger-causes another
- Theres some causality but not sure if physical or causal
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- Partial Directed Coherence
- Directed [Transfer Function](Transfer%20Function.md)
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- Magnitude vs freq
- Undirected
- From O1 to PZ is different from PZ to O1
- How well can activity in one channel predict one in another