![Magnetic Stimulation Activates Brain Cells To Improve Memory Magnetic Stimulation Activates Brain Cells To Improve Memory](https://images.medindia.net/health-images/1200_1000/magnets-for-memory.jpg)
‘By combining neural pathway imaging and magnetic stimulation of the brain the metacognition of individuals can be improved.’
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Researchers at Aalto University and the University of Helsinki have succeeded for the first time ever in affecting metacognition of a tactile working memory task by combining neural pathway imaging and magnetic stimulation of the brain. Understanding brain function might help in the development of new treatments for neuropsychiatric illnesses in the future. By combining different brain research methods in a versatile manner the researchers showed for the first time that transcranial magnetic stimulation of the brain targeting the prefrontal cortex can improve a test subject's ability to evaluate his or her performance in a tactile working memory task.
The ability of human subjects to monitor and control their own cognitive processes is called metacognition. Metacognition is important for people and in many neuropsychiatric illnesses, it is possible to recognize that it has weakened.
'The patient's reduced sense of being ill is familiar from conditions such as Alzheimer's disease, schizophrenia, and traumatic brain injury. Understanding the brain function of healthy test subjects could help in the development of new treatment methods for neuropsychiatric illnesses in the future,' says Doctoral Candidate Juha Gogulski.
Taking part in the study as test subjects were 14 healthy volunteers. They first underwent structural magnetic resonance imaging (MRI) of the brain as well as a diffusion MRI that is sensitive to the movement of water molecules in the brain, making it possible to identify the direction of neural pathways.
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In the last part of the study the test subjects completed working memory tasks in which they were asked to keep in mind the characteristics of touch sensations from the fingertip and to evaluate whether or not the touch stimulation that was just given was similar to or different from the previous stimulus.
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The test subjects also evaluated how certain they were about their answers, on which basis calculations were made on how well a person's own evaluation corresponded to the actual performance level.
Magnetic stimulation of the prefrontal cortex improved the test subjects' evaluation of their performance, as they were able to assess more accurately if their answers had been correct or incorrect.
Source-Eurekalert