Introspection confidence predicts EEG decoding of self-generated thoughts and meta-awareness.

The neurophysiological bases of mind wandering (MW)-an experiential state wherein attention is disengaged from the external environment in favour of internal thoughts-and state meta-awareness are poorly understood. In parallel, the relationship between introspection confidence in experiential state judgements and neural representations remains unclear. Here, we recorded EEG while participants completed a listening task within which they made experiential state judgements and rated their confidence.

Correction to: The effects of microdose LSD on time perception: a randomised, double-blind, placebo-controlled trial.

The manufacturer of the drug product was Onyx Scientific Limited UK, to cGMP standards.

The effects of microdose LSD on time perception: a randomised, double-blind, placebo-controlled trial.

Rationale: Previous research demonstrating that lysergic acid diethylamide (LSD) produces alterations in time perception has implications for its impact on conscious states and a range of psychological functions that necessitate precise interval timing. However, interpretation of this research is hindered by methodological limitations and an inability to dissociate direct neurochemical effects on interval timing from indirect effects attributable to altered states of consciousness.

Methods: We conducted a randomised, double-blind, placebo-controlled study contrasting oral administration of placebo with three microdoses of LSD (5, 10, and 20 μg) in older adults.