Disruption of synaesthesia by posthypnotic suggestion: an ERP study

Neuropsychologia
Devin Blair TerhuneMagnus Lindgren

Abstract

This study examined whether the behavioral and electrophysiological correlates of synaesthetic response conflict could be disrupted by posthypnotic suggestion. We recorded event-related brain potentials while a highly suggestible face-color synaesthete and matched controls viewed congruently and incongruently colored faces in a color-naming task. The synaesthete, but not the controls, displayed slower response times, and greater P1 and sustained N400 ERP components over frontal-midline electrodes for incongruent than congruent faces. The behavioral and N400 markers of response conflict, but not the P1, were abolished following a posthypnotic suggestion for the termination of the participant's synaesthesia and reinstated following the cancellation of the suggestion. These findings demonstrate that the conscious experience of synaesthesia can be temporarily abolished by cognitive control.

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Citations

Oct 9, 2012·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Michael LifshitzAmir Raz
Jun 26, 2012·Consciousness and Cognition·Michael LifshitzAmir Raz
Jun 26, 2012·Consciousness and Cognition·Natasha K J CampbellAmir Raz
Jan 9, 2014·Consciousness and Cognition·Catherine DéryAmir Raz
Aug 13, 2015·The American Journal of Clinical Hypnosis·Claire M Champigny, Amir Raz
May 16, 2014·Frontiers in Human Neuroscience·Hazel P AndersonJamie Ward
Aug 15, 2014·Frontiers in Psychology·Mathieu LandryAmir Raz
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Mar 31, 2018·The International Journal of Clinical and Experimental Hypnosis·Jerome Daltrozzo, Gerardo E Valdez
Nov 30, 2018·Neuroscience of Consciousness·Hernán Anlló, Jérôme Sackur
Jul 19, 2013·Nature Reviews. Neuroscience·David A Oakley, Peter W Halligan
Jun 26, 2014·Reviews in the Neurosciences·Marcel Neckar, Petr Bob
Dec 13, 2017·Scientific Reports·Sakari KallioJohanna K Kaakinen
Feb 9, 2021·Consciousness and Cognition·David A OakleyQuinton Deeley

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