Posted on Aug 9, 2017
What Research About Health Can Teach You

What Research About Health Can Teach You

The Science Behind Hypnosis Time and again, we hear the question, what is hypnosis really and is it even real? A brain signature of being hypnotized was first recognized in 2012 with functional MRI (fMRI), a type of MRI that showed brain . Parts of the brain connected with executive control and attention were proven to have a role. In particular, hypnotized subjects exhibited stronger co-activation between components of the executive-control network (manages basic cognitive functions) and the salience network (decides which stimuli should receive attention). In their brains, both networks were activated simultaneously. In those who were not under hypnosis, this connectivity was not observed. What placed these experiments in a higher league is that researchers used fMRI to know which areas of brain were activated when the subjects were analyzing colors. The color sections in both left and right hemispheres were stimulated when the subjects were made to perceive colors. The scientists concluded that hypnosis is indeed an independent psychological state and surely not the outcome of adopting a role.
What I Can Teach You About Health
Another fascinating observation from these studies were the hemispheric changes between non-hypnotized and hypnotized brain. When non-hypnotized subjects were requested to point out colors from a black-and-white picture, only the right hemisphere was activated. The left hemisphere, where reason and logic is processed, responded only during hypnosis.
8 Lessons Learned: Health
Another research used positron-emission tomography (PET) to look into cerebral blood flow in hypnotized subjects. The hypnotic state was in relation to activation of many mostly left-sided cortical regions, plus a few right-sided areas. The trend of activation shared a lot of similarities with mental imagery, from which it showed differences by the relative deactivation of the precuneus (handles visuo-spatial imagery, episodic memory retrieval and self-processing operations of the brain). The trend of activation had plenty of similarities with mental imagery, from which it proved different by the relative deactivation of the precuneus, the part of the brain that takes care of the brain’s visuo-spatial imagery, episodic memory retrieval and self-processing operations. For some scholars, hypnotized subjects activate to a considerable extent the brain parts that are used in imagination, but without causing real perceptual changes. Another functional MRI study showed limited activity in both anterior cingulate cortex, which affects emotions, learning and memory, and visual areas under hypnosis. The outcome suggests that hypnosis has an influence on cognitive control by controlling activity in certain brain areas. In various studies, hypnotizable subjects revealed significantly more pronounced brain activity in the anterior cingulate gyrus, which affects emotions and behavior, compared to non-hypnotized subjects. The anterior cingulate gyrus acts on errors as well as evaluates emotional chagnes. Prefrontal cortex is linked to higher level cognitive processing and behavior. Comparison of findings from several studies also puts contradictory results to fore. Many sections of the brain seem to be activated in different studies. This could be related to multiple experimental techniques, both in terms of equipment and hypnotic approach used in the experiments.