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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2019 Jun 13;67(3):842–853. doi: 10.1109/TBME.2019.2921766

Figure 2.

Figure 2.

Single (A.) and dual layer EEG (B.) processing pipelines. Common EEG processing steps (white boxes) and dual layer specific EEG processing steps (black boxes). Single-layer EEG approaches relied on 128-scalp EEG electrodes without additional preprocessing (1: Single layer EEG) and after Artifact Subspace Reconstruction (2: ASR). Dual-layer EEG approaches relied on 128-scalp EEG electrodes, 40 isolated noise-only electrodes, and 8 neck EMG electrodes merged into an adaptive mixture independent component analysis (AMICA) after contrasting preprocessing steps. Dual-layer EEG processing was completed without additional preprocessing (3: Dual layer EEG), after frequency domain noise cancellation (4: Noise cancel), after ASR (5), and after applying frequency domain noise cancellation to artifact components from principal component analysis and canonical component analysis (6: PCA+CCA).