Fig. 9
From: A Human EEG Dataset for Multisensory Perception and Mental Imagery

Power Spectral Density (PSD) Differences Among Various Imagery Conditions. Comparative PSD analyses highlighting neural spectral differences between (a) visual versus auditory imagery, (b) multimodal versus visual imagery, and (c) multimodal versus auditory imagery. Results underscore distinctive neural activa- tion patterns across different brain regions and frequency bands, notably heightened Alpha and Beta activities in multimodal imagery.