Research Article

Slowing and Loss of Complexity in Alzheimer's EEG: Two Sides of the Same Coin?

Table 2

Mean and standard deviation values of compression ratio, LZ complexity, relative power, and synchrony measures. Sensitivity of the measures in discriminating between MCI and mild AD is given in last column. Uncorrected P values from Mann-Whitney test, where * and ** indicate and , respectively; Indicates P values that remain significant after postcorrection (Bonferroni, ).

MCI versus control
Measure Control MCIP value

1D SPIHT CR .3077
2D SPIHT CR .3778
2D SPIHT+AC .4477
LZ complexity .0830
ρ .00044 **†
ffDTF .0012 **†
delta .2934
theta .0001 **†
alpha-1 .1698
alpha-2 .9939
beta .0116 *

Mild AD versus control
Measure Control Mild ADP value

1D SPIHT CR **†
2D SPIHT CR **†
2D SPIHT+AC **†
LZ complexity .0024 **†
ρ .0024 **†
ffDTF .0001 **†
delta .0029 **†
theta **†
alpha-1 .0009 **†
alpha-2 **†
beta .0006 **†