The spectral dynamics of visual awareness: An interplay of different frequencies?
The European journal of neuroscience June 1, 2023 Alessandra Tafuro, Chiara Mazzi, Silvia Savazzi
Visual awareness involves a complex interplay of brain rhythms across different frequency bands. In an orientation discrimination task where response bias was induced, EEG recordings showed that alpha and beta bands are especially engaged when contrasting aware versus unaware trials, with a main power suppression for aware trials. Theta, alpha, beta, and gamma bands each contribute as prerequisites or post-perceptual processes, rather than a single frequency marking consciousness itself.