LSD modulates effective connectivity and neural adaptation mechanisms in an auditory oddball paradigm
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Vol. 10 Iss. 11 | June 2022 | Number 39
Neuropharmacology. 2018 23-Feb;():. 10.1016/j.neuropharm.2017.10.039
Study Summary
Twenty healthy subjects underwent a pseudo-randomized, placebo-controlled, magnetoencephalography (MEG) auditory oddball paradigm study to examine the effects of LSD on feedback and feedforward connections in perceptual learning and inference under the predictive coding framework. Subjects received LSD and placebo on different days. Scalp level Event Related Fields (ERF) showed reduced neural adaptation to familiar stimuli and an attenuated neural 'surprise' response to novel stimuli in the LSD condition. The presentation of both novel stimuli and LSD modulate backward extrinsic connectivity.
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