Neuronal correlates of full and partial visual conscious perception.
Consciousness and Cognition February 1, 2020 Hamed Haque, Muriel Lobier, J Matias Palva et al.
Partial consciousness—where the presence but not identity of an object can be reported—and full consciousness have distinct neural signatures. Recording brain activity with magnetoencephalography during a visual task, partial consciousness was linked to an early increase in evoked activity and theta/low-alpha-band oscillations. Full consciousness additionally involved late evoked activity and beta-band oscillations. Stronger evoked activity and a late increase in theta oscillations in higher-order visual regions, posterior parietal, and prefrontal cortices dissociated full from partial consciousness. The findings indicate that both evoked activity and theta oscillations differentiate these levels of conscious perception.