A1 Refereed original research article in a scientific journal

Segregated brain state during hypnosis




AuthorsTuominen Jarno, Kallio Sakari, Kaasinen Valtteri, Railo Henry

PublisherOxford Academic

Publication year2021

JournalNeuroscience of Consciousness

Journal acronymNeurosci Consc

Article numberniab002

Volume2021

Issue1

DOIhttps://doi.org/10.1093/nc/niab002

Web address https://academic.oup.com/nc/article/2021/1/niab002/6166137?guestAccessKey=b3098a60-0cdc-4981-99cb-add974c5b0dd

Self-archived copy’s web addresshttps://research.utu.fi/converis/portal/detail/Publication/53293700


Abstract

Can the brain be shifted into a different state using a simple social cue, as tests on highly hypnotizable subjects would suggest? Demonstrating an altered global brain state is difficult. Brain activation varies greatly during wakefulness and can be voluntarily influenced. We measured the complexity of electrophysiological response to transcranial magnetic stimulation in one ‘hypnotic virtuoso’. Such a measure produces a response arguably outside the subject’s voluntary control and has been proven adequate for discriminating conscious from unconscious brain states. We show that a single-word hypnotic induction robustly shifted global neural connectivity into a state where activity remained sustained but failed to ignite strong, coherent activity in frontoparietal cortices. Changes in perturbational complexity indicate a similar move towards a more segregated state. We interpret these findings to suggest a shift in the underlying state of the brain, likely moderating subsequent hypnotic responding.


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Last updated on 2024-26-11 at 17:17