Effect of Hypnotic Suggestions on Evoked Potentials

Beck, Edward C.; Barolin, Gerhard S.

doi:10.1097/00005053-196502000-00005

Cited by 38 publications

(7 citation statements)

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“…Concerning the neural brain processes during the four experimental conditions, the present study is the first one that used a three-stimulus oddball paradigm for the investigation of dense array brain electrical, event-related potentials of high and low susceptible participants as neural signatures of auditory stimulus processing. Earlier studies, f.e., by Barabasz and coworkers [ 29 ] only investigated the P300 amplitude in response to a one-stimulus paradigm and identified an earlier component whose functional relationship to deafness or other aspects of stimulus processing were not outlined clearly [ 69 ]. Since the present study focused on the sources of P300 amplitude, we forego the discussion of other stimulus modalities and refer to a similar study in which we examined a comparable design for a visual three-stimulus oddball [ 70 ], and only focus on some interpretations of the present study.…”

Section: Discussionmentioning

confidence: 99%

Suggested deafness during hypnosis and simulation of hypnosis compared to a distraction and control condition: A study on subjective experience and cortical brain responses

et al. 2020

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Hypnosis is a powerful tool to affect the processing and perception of stimuli. Here, we investigated the effects of hypnosis on the processing of auditory stimuli, the time course of event-related-potentials (ERP; N1 and P3b amplitudes) and the activity of cortical sources of the P3b component. Forty-eight participants completed an auditory oddball paradigm composed of standard, distractor, and target stimuli during a hypnosis (HYP), a simulation of hypnosis (SIM), a distraction (DIS), and a control (CON) condition. During HYP, participants were suggested that an earplug would obstruct the perception of tones and during SIM they should pretend being hypnotized and obstructed to hear the tones. During DIS, participants’ attention was withdrawn from the tones by focusing participants’ attention onto a film. In each condition, subjects were asked to press a key whenever a target stimulus was presented. Behavioral data show that target hit rates and response time became significantly reduced during HYP and SIM and loudness ratings of tones were only reduced during HYP. Distraction from stimuli by the film was less effective in reducing target hit rate and tone loudness. Although, the N1 amplitude was not affected by the experimental conditions, the P3b amplitude was significantly reduced in HYP and SIM compared to CON and DIS. In addition, source localization results indicate that only a small number of neural sources organize the differences of tone processing between the control condition and the distraction, hypnosis, and simulation of hypnosis conditions. These sources belong to brain areas that control the focus of attention, the discrimination of auditory stimuli, and the organization of behavioral responses to targets. Our data confirm that deafness suggestions significantly change auditory processing and perception but complete deafness is hard to achieve during HYP. Therefore, the term ‘deafness’ may be misleading and should better be replaced by ‘hypoacusis’.

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Section: Discussionmentioning

confidence: 99%

Suggested deafness during hypnosis and simulation of hypnosis compared to a distraction and control condition: A study on subjective experience and cortical brain responses

et al. 2020

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“…Some have shown reduction in the amplitude of the evoked response during a hypnotic instruction that the stimulus be perceived as attenuated (Clynes, Kohn, & Lifshitz, 1964;Galbraith, Cooper, & London, 1972;Guerrero-Figueroa & Heath, 1964;Hernandez-Peon & Donoso, 1959;Wilson, 1968), but a number of other studies have failed to demonstrate any differences (Amadeo & Yanovski, 1975;Andreassi, Balinsky, Gallichio, DeSimone, & Mellers, 1976;Beck & Barolin, 1965;Beck, Dustman, & Beier, 1966;Halliday & Mason, 1964;Serafetinides, 1968;Zakrzewski & Szelenberger, 1981). Possible explanations for this SPIEGEL AND BARABASZ variation in findings include small sample sizes, the use of patients with severe neurological or psychiatric disorders, semiquantitative analysis of event-related potentials, and hypnotic instructions which require the subject to attend to the stimulus rather than ignore it (e.g., 'the stimulus will appear less bright than usual).…”

Section: Literature Reviewmentioning

confidence: 99%

Effects of Hypnotic Instructions on P₃₀₀Event-Related-Potential Amplitudes: Research and Clinical Implications

Spiegel

Barabasz

1988

American Journal of Clinical Hypnosis

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“…Equi valent negative findings were observed with auditory stimulation o f four subjects. Beck and Barolin (1965) found no consistent changes in the V EPs (up to 240 msec following the flash) o f eight subjects; this could be related to suggestions that the light was bright and near or dim and far away, although the suggestions were obviously accepted. The EPs were reported to be more stable during hypnosis, with greater stability attributed to the intensely focused atten tion o f the hypnosis trance.…”

Section: Discussionmentioning

confidence: 77%

Hypno-Analgesia and Acupuncture Analgesia: a Neurophysiological Reality?

Saletu¹,

Saletu²,

Brown³

et al. 1975

Neuropsychobiology

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The effects of hypnosis, acupuncture and analgesic drugs on the subjective experience of pain and on objective neurophysiological parameters were investigated. Pain was produced by brief electric stimuli on the wrist. Pain challengers were: hypnosis (induced by two different video tapes), acupuncture (at specific and unspecific loci, with and without electrical stimulation of the needles), morphine and ketamine. Evaluation of clinical parameters included the subjective experience of pain intensity, blood pressure, pulse, temperature, psychosomatic symptoms and side effects. Neurophysiological parameters consisted of the quantitatively analyzed EEG and somatosensory evoked potential (SEP). Pain was significantly reduced by hypnosis, morphine and ketamine, but not during the control session. Of the four acupuncture techniques, only electro-acupuncture at specific loci significantly decreased pain. The EEG changes during hypnosis were dependent on the wording of the suggestion and were characterized by an increase of slow and a decrease of fast waves. Acupuncture induced just the opposite changes, which were most significant when needles were inserted at traditional specific sites and stimulated electrically. The evoked potential findings suggested that ketamine attenuates pain in the thalamocortical pathways, while hypnosis, acupuncture and morphine induce analgesia at the later CNS stage of stimulus processing. Finally some clinical-neurophysiological correlations were explored.

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Effect of Hypnotic Suggestions on Evoked Potentials

Cited by 38 publications

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Suggested deafness during hypnosis and simulation of hypnosis compared to a distraction and control condition: A study on subjective experience and cortical brain responses

Suggested deafness during hypnosis and simulation of hypnosis compared to a distraction and control condition: A study on subjective experience and cortical brain responses

Effects of Hypnotic Instructions on P₃₀₀Event-Related-Potential Amplitudes: Research and Clinical Implications

Hypno-Analgesia and Acupuncture Analgesia: a Neurophysiological Reality?

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Effect of Hypnotic Suggestions on Evoked Potentials

Cited by 38 publications

References 0 publications

Suggested deafness during hypnosis and simulation of hypnosis compared to a distraction and control condition: A study on subjective experience and cortical brain responses

Suggested deafness during hypnosis and simulation of hypnosis compared to a distraction and control condition: A study on subjective experience and cortical brain responses

Effects of Hypnotic Instructions on P300Event-Related-Potential Amplitudes: Research and Clinical Implications

Hypno-Analgesia and Acupuncture Analgesia: a Neurophysiological Reality?

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Effects of Hypnotic Instructions on P₃₀₀Event-Related-Potential Amplitudes: Research and Clinical Implications