“…In contrast, others have suggested that psychedelic evidence might aid ongoing efforts to solve the so-called "Hard Problem of Consciousness" within a physicalist framework (Brogaard & Gatzia, 2016a), and explanations of key psychedelic phenomena have been offered in terms of empirically-based theories of phenomenal consciousness (Gallimore, 2015;Grinde & Stewart, 2020;O'Brien & Opie, 2015). Another project involves the use of conceptual tools from the phenomenological tradition in philosophy to analyse and describe the psychedelic state, thereby putatively advancing the project of classical phenomenology itself (Horváth, Szummer, & Szabo, 2018;Szummer et al, 2017Szummer et al, , 2019. Finally, Brogaard and colleagues have used data from psychedelic neuroscience to develop empirically-informed philosophical accounts of mental phenomena such as synaesthesia (Brogaard, 2013;Brogaard & Gatzia, 2016b) and attention (Kentridge & Brogaard, 2017).…”