6.1. Purpose

This interface is used to analyze coherence between pairs of EEG electrodes. Coherence shows the degree of synchrony of frequency components between two channels.

6.2. Controls

6.3. Coherence Calculation Method

Formula: the mscohere (Magnitude Squared Coherence) function is used:[Cxy, F] = mscohere(signal1, signal2, [], [], frequencies, Fs) Parameters: Mathematical definition:Cxy(f) = |Pxy(f)|^2 / (Pxx(f) * Pyy(f))...

6.4. Display

The interface contains a 16-plot grid (4 × 4), where each cell corresponds to a pair of electrodes: For each pair, coherence curves are shown for...

6.5. Interpretation

Physiological explanation of coherence: Coherence measures how synchronously two brain areas operate at a specific frequency. High coherence (close to 1): Low coherence (close to 0):...

6.6. Use in Research