Granger Causallity

• Autoregressive
• If significant then electrode Granger-causes another
• Theres some causality but not sure if physical or causal
• 
• Partial Directed Coherence
• Directed Transfer Function
• 
  • 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