When the vine speaks. Ayahuasca-induced voices and the boundaries of hallucination

What if the most clinically important psychedelic effects were not the spectacular visuals, but the voices we rarely discuss? In a field still dominated by “mystical experiences” and “ego dissolution,” this talk argues that psychedelics-induced voice-hearing offers a powerful and overlooked lens for rethinking hallucination and therapeutic change.

Drawing on a mixed-methods study with 84 international ayahuasca users, we integrate standardized scales, quantitative data, and first-person accounts. The findings suggest that ayahuasca frequently elicits intentional, affectively charged voices, yet these experiences are neither pathological nor associated with elevated absorption or hallucination-proneness. Instead, the voices are often experienced as relational “others,”, that challenge, instruct, or support the hearer and can sometimes be re-engaged after the ceremony.

The analysis challenges dominant psychiatric distinctions by showing that such voices can be both hallucinatory and non-pathological. It further reveals that repeated ritual exposure appears to generate a learning threshold after which participants become more able to recognize, negotiate, and modulate these voices, suggesting a form of psychedelic apprenticeship or voice literacy. Finally, the persistence of these voices beyond the acute state, and their active use in self-reflection, decision-making, and emotional regulation, highlights their ongoing psychological relevance.

We’ll show that ayahuasca voice-hearing constitutes a distinct configuration of non-clinical hallucination: pharmacologically induced, socially scaffolded, relationally structured, and often therapeutically meaningful. Approaching these voices as relational agents rather than sensory noise opens new questions for psychedelic studies and invites a rethinking of how psychedelic-assisted therapy engages with the dialogical content it generates.