NeuroAnalyzer tutorials: Analyze EEG (5)

Lateralization index is calculated as log(A / B), where A is average power at given frequency (default is 10 Hz, alpha) for the right hemisphere and B is average power at that frequency for the left hemisphere.

Lateralization index (default for alpha 10 Hz frequency):

lidx = lat_idx(eeg)

Output:

1.0831759729927761

Lateralization index for the range 8.0-12.5 Hz:

lidx = lat_idx(eeg, frq=(8.0, 12.5))

Output:

1.0362690736517686