Thursday, March 20, 2014

dual processing and Hypnosis

Although dissociation during hypnosis remains a point of contention, researchers have established that we do use dual processing to contend with unconscious and conscious information in our everyday lives.

  • Some researchers believe that hypnosis is more than role-playing because hypnotized individuals still perform behaviors even when they believe that no one is observing them. Brain activity changes during hypnosis, though some imagined visual experiences while hypnotized produce similar activity as when a person views the same thing while not hypnotized. Some studies demonstrated increased information processing speed during hypnosis, with diminished Stroop effects for hypnotized participants.
  • Hilgard believed hypnosis involved a dissociation, and that people are able to endure pain during hypnosis by dissociating those sensations from their reactions to the pain. Alternately, hypnosis may relieve pain by moving our selective attention away from the painful stimulus, with activation in the somatosensory cortex region and less activation at the site of the pain.
  • Although this remains a point of contention, researchers have established that we do use dual processing to filter information in our everyday lives, and multiple processes could also be at work here. Current research focuses on the influence of biological, social and psychological factors on hypnosis.
  • Selective attention
    The phenomenon of being able to focus one's auditory attention on a particular stimulus while filtering out a range of other stimuli.
  • dissociation
    A defense mechanism in which certain thoughts or mental processes are compartmentalized in order to avoid emotional stress to the conscious mind. Dissociation includes a wide array of experiences, from mild detachment from immediate surroundings to more severe detachment from physical and emotional reality.
  • hypnosis
    A trancelike state, artificially induced, in which a person has a heightened suggestibility, and in which suppressed memories may be experienced.

Examples

  • The Stroop effect refers to the fact that listing the color of a word is easier than reading its name, e.g. when “red” is written in green lettering. Research shows that hypnosis may be able to reduce the impact of the Stroop effect of people under the influence of hypnosis.

Figures





Neurons from the Somatosensory Cortex
During hypnosis, the somatosensory cortex is activated by a painful stimulus, but the area that processes and attends to that pain is not as active as expected, thus hypnosis may relieve pain by moving our attention away from it. 
 
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