Neural Signatures of Consciousness: Non-Linear Dynamics of EEG Responses to Sound
International Journal For Multidisciplinary Research July 8, 2025 K Premila, V Sumalatha
Conscious auditory processing is characterized by higher entropy and more complex recurrence patterns in EEG signals than non-conscious or reduced-consciousness states. Non-linear EEG metrics, including entropy measures, recurrence quantification analysis, and fractal dimension estimation, reliably discriminated between wakeful and subdued neural conditions with classification accuracy exceeding 85%. These findings suggest that non-linear EEG metrics can serve as objective markers of consciousness, beyond traditional frequency-based analyses, paving the way for improved assessment tools in clinical and neuroscientific settings.