Par intervenant > Faivre Nathan

Perceptual experience is a multi-faceted, dynamical process encompassing both perceptual and self consciousness. Simple forms of perceptual experience can be tackled empirically through measures of stimulus detectability and confidence ratings. In this talk, I will argue that stimulus detection and confidence can be explained by evidence accumulation, a form of sequential sampling of sensory evidence performed by the brain. I will present recent invasive electrophysiological recordings in which human volunteers performed detection and discrimination tasks followed by confidence ratings. I will discuss the results in light of a computational model of evidence accumulation explaining key aspects of perceptual experience. I will end the talk by discussing future projects aiming to combine electrophysiological and electrochemical correlates of perceptual experience.