Brain Waves Show Our Thoughts or Multiple Personalitiy Switches?

Science decodes ‘internal voices’

By Jason Palmer Science and technology reporter, BBC News: Science & Environment

“Researchers have demonstrated a striking method to reconstruct words, based on the brain waves of patients thinking of those words.”

The technique relies on gathering electrical signals directly from patients’ brains.

Based on signals from listening patients, a computer model was used to reconstruct the sounds of words that patients were thinking of.

With the help of that model, when patients were presented with words to think about, the team was able to guess which word the participants had chosen. Mindy McCumber responds: “As a therapist, I can see potential implications for the restoration of communication for a wide range of disorders”.

As the writer of this blog, I can see potential to make claims that are not scientifically-based that people may unwittingly believe. Are researchers who claim to detect multiple personalities actually tracking high-brain functioning reflecting thoughts instead?

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2 Comments

  1. K

     /  02/06/2012

    Nice try, but this is occuring in a completely different section of the brain.

    Language involves a network of regions in the frontal, temporal, and prietal lobes in the left cerebral hemisphere. Also involved are the middle temporal, inferior temporal, fusiform, angular gyri, and left refrontal areas.

    Note that langauge involves the left side of the brain.
    http:// www. jneurosci. org/content/17/1/353.full

    The sensorimotor area can be involved. Reading a word involves the visual cortex, hearing a word involves the auditory cortex. Saying it involves the posterior speech area and the primary motor area.
    http:// www. crossroadsinstitute. org/learningcenter/qeeg/what-is-brainmapping.html
    http:// faculty.washington. edu/chudler/lang.html

    When someone with DID switches, however, the hippocampal and medial temporal are affected. The hippocampal volume actually changes in response to switching.

    Bilateral hippocampal inhibition occured on the right side. Also inhibited were the right hippocampal and medial temporal regions and small regions of the substantia nigra and the globus pallidus.

    Note that the right side of the brain was more involved.

    Furthermore, guided imagery did not lead to the same results.
    http:// www. mendeley. com/research/functional-magnetic-resonance-imaging-personality-switches-woman-dissociative-identity-disorder/
    http:// home.earthlink. net/~maiziekelly/fMRI. htm

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    Reply
    • The hippocampal can change for a variety of reasons. How can anyone declare it’s because of DID without controlling for other factors?

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