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Fredrik Ullén

3 papers in the library · 41 citations · publishing 2012-2026

Papers

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Associations between psychedelic use and migraine history in Swedish twins.

Journal of Psychopharmacology May 1, 2026 Otto Simonsson, Sunjuri Sun, Laura W. Wesseldijk et al.

While psychedelics have shown initial promise in the treatment of migraine, experimental studies have relied on small and homogenous samples, which limit the reliability and generalizability of findings. These limitations underscore the complementary value of other research designs that leverage larger and more representative samples. This cross-sectional study included three cohorts of twins...

Adolescent Psychedelic Use and Psychotic or Manic Symptoms

JAMA Psychiatry March 13, 2024 Otto Simonsson, Miriam A. Mosing, Walter Osika et al. 41 citations

Importance While psychedelic-assisted therapy has shown promise in the treatment of certain psychiatric disorders, little is known about the potential risk of psychotic or manic symptoms following naturalistic psychedelic use, especially among adolescents. Objective To investigate associations between naturalistic psychedelic use and self-reported psychotic or manic symptoms in adolescents...

Individual differences in the proneness to have flow experiences are linked to dopamine D2-receptor availability in the dorsal striatum.

Neuroimage November 2, 2012 Örjan De Manzano, Simon Cervenka, Aurelija Jucaite et al.

Flow is a subjective experience of high but effortless attention, enjoyment, and low self-awareness that can occur during the active performance of challenging tasks. The dispositional proneness to experience flow is associated with personality traits that are known to be influenced by dopaminergic neural systems. Here, for the first time, we investigated relations between flow proneness and...

DOI: 10.1016/j.neuroimage.2012.10.072 (opens in new tab) Full text (opens in new tab) Corpus striatum Humans Raclopride Receptors, dopamine d2 +9