The phenomenology of psychedelic temporality: current knowledge, open questions, and clinical applications

Psychedelic therapy's effectiveness partly depends on the nature of the experiences it produces, especially altered time perception, such as feelings of timelessness. Interpreting these reports is challenging because true timelessness may be impossible to experience, and descriptions vary in clinical relevance. Using a phenomenological approach to temporality, this article clarifies ambiguities in current assessment tools. It proposes that psychedelic temporality might counteract depressive temporality, offering a preliminary mechanism for therapy. A dedicated phenomenological research program could map psychedelic time experiences, resolving philosophical and clinical uncertainties and guiding future studies.

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Abstract

Current evidence suggests that the efficacy of psychedelic therapy depends, in part, on the character of psychedelic experiences themselves. One pronounced aspect of psychedelic experiences is alterations to the experience of time, including reports of timelessness or transcending time. However, how we should interpret such reports remains unclear, and this lack of clarity has philosophical and clinical implications. For instance, “true” timelessness may be considered antithetical to having any experience at all, and descriptions of experiences involving “timelessness” are known to be diverse and of varying clinical significance. In this article, we utilize a phenomenological approach to the study of temporality to highlight ambiguities in current constructs used to assess psychedelic experiences. In doing so, we advance some preliminary phenomenological accounts of psychedelic therapy’s mechanisms of action, such as psychedelic temporality acting as a kind of counterpoint for depressive temporality. We conclude by outlining how a dedicated phenomenological research program can provide a nuanced map of psychedelic temporality, guiding future research in a manner that addresses both philosophical and clinical ambiguities.