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

Figure 2

Lossless EEG compression algorithms apply wavelet transforms followed by Set Partitioning in Hierarchical Trees (SPIHT).

(a) Algorithm A: EEG compression using 1D SPIHT

(b) Algorithm B: EEG compression using 2D SPIHT

(c) Algorithm C: EEG compression using 2D SPIHT (at optimal rate 𝑅_𝑜), followed by arithmetic coding for the residuals