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Evidence for the existence of a hypnotic state? Key may be in the glazed staring eyes, researchers suggest

Date:
October 25, 2011
Source:
Suomen Akatemia (Academy of Finland)
Summary:
A multidisciplinary group of researchers from Finland and Sweden has found that the strange stare of patients under hypnosis may be a key that can eventually lead to a solution to a long debate about the existence of a hypnotic state.

Eyes in the normal waking state (top) and under hypnosis (bottom).
Credit: Image courtesy of Suomen Akatemia (Academy of Finland)

A multidisciplinary group of researchers from Finland (University of Turku and Aalto University) and Sweden (University of Skφvde) has found that the strange stare of patients under hypnosis may be a key that can eventually lead to a solution to a long debate about the existence of a hypnotic state.

One of the most widely known features of a hypnotized person in the popular culture is a glazed, wide-open look in the eyes. Paradoxically, this sign has not been considered to have any major importance among researchers and has never been studied in any detail, probably due to the fact that it can be seen in only some hypnotized people.

Published in the online journal PLoS ONE, the study was done with a very highly hypnotizable participant who can be hypnotized and dehypnotized by just using a one-word cue. The change between hypnotic state and normal state can thus be varied in seconds.

The researchers used high-resolution eye-tracking methodology and presented a set of well-established oculomotor tasks that trigger automatic eye behavior. They found the glazed stare was accompanied by objectively measurable changes in automatic, reflexive eye behavior that could not be imitated by non-hypnotized participants.

In the field of hypnosis research this result means that hypnosis can no longer be regarded as mental imagery that takes place during a totally normal waking state of consciousness. On the other hand, the result may have wider consequences for psychology and cognitive neuroscience, since it provides the first evidence of the existence of a conscious state in humans that has previously not been scientifically confirmed.

Hypnosis has had a long and controversial history in psychology, psychiatry and neurology. For over 100 years researchers have debated if a special hypnotic state exists or whether it is just about using cognitive strategies and mental imagery in a normal waking state. So far, a hypnotic state has never been convincingly demonstrated, and therefore, many researchers regard the hypnotic state to be just a popular myth in psychology.


Story Source:

The above story is based on materials provided by Suomen Akatemia (Academy of Finland). Note: Materials may be edited for content and length.


Journal Reference:

  1. Sakari Kallio, Jukka Hyφnδ, Antti Revonsuo, Pilleriin Sikka, Lauri Nummenmaa. The Existence of a Hypnotic State Revealed by Eye Movements. PLoS ONE, 2011; 6 (10): e26374 DOI: 10.1371/journal.pone.0026374

Cite This Page:

Suomen Akatemia (Academy of Finland). "Evidence for the existence of a hypnotic state? Key may be in the glazed staring eyes, researchers suggest." ScienceDaily. ScienceDaily, 25 October 2011. <www.sciencedaily.com/releases/2011/10/111025091559.htm>.
Suomen Akatemia (Academy of Finland). (2011, October 25). Evidence for the existence of a hypnotic state? Key may be in the glazed staring eyes, researchers suggest. ScienceDaily. Retrieved August 28, 2014 from www.sciencedaily.com/releases/2011/10/111025091559.htm
Suomen Akatemia (Academy of Finland). "Evidence for the existence of a hypnotic state? Key may be in the glazed staring eyes, researchers suggest." ScienceDaily. www.sciencedaily.com/releases/2011/10/111025091559.htm (accessed August 28, 2014).

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