Cortex
September 1, 2026
Elisabetta Colombari, Giorgia Parisi, Sonia Mele et al.
Disclosing the brain areas responsible for the emergence of visual awareness and their timing of activation represents one of the major challenges in consciousness research. In particular, isolating the neural processes strictly related to consciousness from concurrent neural dynamics, either related to prerequisites or post-perceptual processing, has long engaged consciousness research. In...
The European journal of neuroscience
June 1, 2023
Alessandra Tafuro, Chiara Mazzi, Silvia Savazzi
The goal of this study was to investigate the neurophysiological correlates of visual awareness, with a specific focus on its event-related spectral perturbation (ERSP) features. To this aim, we tried to disentangle the proper neural correlates of consciousness (NCC) from other prerequisite and post-perceptual processing. To do so, we administered an orientation discrimination task, inducing a...
Frontiers in Systems Neuroscience
2020
Chiara Mazzi, Gaetano Mazzeo, Silvia Savazzi
Contrastive analysis has been widely employed in the search for the electrophysiological neural correlates of consciousness. However, despite its clear logic, it has been argued that it may not succeed in isolating neural processes solely involved in the emergence of perceptual awareness. In fact, data from contrastive analysis would be contaminated by potential confounding factors reflecting...
Neuropsychologia
May 1, 2019
Chiara Mazzi, Silvia Savazzi, Juha Silvanto
Blindsight has been central to theories of phenomenal awareness; that a lesion to primary visual cortex (V1) abolishes all phenomenal awareness while unconscious visual functions can remain has led to the view that this region plays a crucial role in generating visual consciousness. However, since the early 20th century, there have been reports, many of which controversial, of phenomenal...
Scientific Reports
March 20, 2019
Chiara F Tagliabue, D. Veniero, C. Benwell et al.
How neural representations of low-level visual information are accessed by higher-order processes to inform decisions and give rise to conscious experience is a longstanding question. Research on perceptual decision making has revealed a late event-related EEG potential (the Centro-Parietal Positivity, CPP) to be a correlate of the accumulation of sensory evidence. We tested how this evidence...
Frontiers in Psychology
2016
Chiara F Tagliabue, Chiara Mazzi, Chiara Bagattini et al.
69 citations
In visual cognitive neuroscience the debate on consciousness is focused on two major topics: the search for the neural correlates of the different properties of visual awareness and the controversy on the graded versus dichotomous nature of visual conscious experience. The aim of this study is to search for the possible neural correlates of different grades of visual awareness investigating the...