In Rick Repetti (ed.), The Routledge Handbook of the Philosophy of Meditation (forthcoming)

Authors
Chris Letheby
University of Western Australia
Abstract
Psychedelic ingestion and meditative practice are both ancient methods for altering consciousness that became widely known in Western society in the second half of the 20th century. Do the similarities begin and end there, or do these methods – as many have claimed over the years – share some deeper common elements? In this chapter I take a neurophilosophical approach to this question and argue that there are, indeed, deeper commonalities. Recent empirical studies show that psychedelics and meditation modulate overlapping brain networks involved in the sense of self, salience, and attention; moreover, psychedelics can occasion lasting increases in “mindfulness-related capacities” for taking a non-reactive stance on one’s inner experience (e.g. Sampedro et al. 2017). The self-binding theory of psychedelic ego dissolution (Letheby and Gerrans 2017) offers a plausible explanation of these findings: by disrupting self-related beliefs implemented in high-level cortical networks, both psychedelics and meditation can “unbind” mental contents from one’s self-model, moving these contents along the continuum from phenomenal transparency to opacity (cf. Metzinger 2003). In other words, both psychedelics and meditation can expose and weaken our foundational beliefs about our own identity, allowing us to disidentify with these beliefs and see them as “just thoughts”. There are connections between these ideas and recent arguments suggesting that psychedelic use may have epistemic benefits consistent with philosophical naturalism (Letheby 2015, 2016, 2019). I conclude with a proposal: these connections may help in thinking about the putative epistemic benefits of meditation practice from a naturalistic perspective.
Keywords psychedelics  meditation  mindfulness  cognitive binding  phenomenal transparency  phenomenal opacity  LSD  psilocybin  ayahuasca
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References found in this work BETA

The Perennial Philosophy.Aldous Huxley - 1945 - Perennial Classics.
Being for No-One.Chris Letheby - 2020 - Philosophy and the Mind Sciences 1 (I):1-26.

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Psychedelics and Environmental Virtues.Nin Kirkham & Chris Letheby - forthcoming - Philosophical Psychology:1-25.

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