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. 2021 Jul 14;15:684423. doi: 10.3389/fncom.2021.684423

FIGURE 4.

FIGURE 4

Participant’s data structures utilized for model development. Feature matrix X corresponds to the seven spectral features that we estimated from the EEG recordings. Target array y refers to the SPSL values that we obtained from the SPSL surveys of the participants through interpolation.