• Postmortal_Pop@lemmy.world
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    6 days ago

    Jokes aside, I watched a documentary yesterday about a study where they used sensors and electrodes on the motor cortex of a subject. They found it took 55microseconds between when he thought about moving his finger and when of actually moved.

    They then interrupted his attempt to move his finger by using the electrode to move the finger instead. They then did series where he was told to move his finger and the computer either would or wouldn’t randomly stimulate the movement first and he had to report whether he felt like it wad him or the computer doing it.

    Subjects disproportionately attributed the motion to the computer even in events where the computer didn’t cause any movement. Suggesting that the subjects had a dramatic reduction in feelings of agency when even the suggestion of outside control was present.

    • daannii@lemmy.world
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      5 days ago

      It’s a disruption of feedback.

      Feedback is actually what causes the perception of ownership of action.

      Artificially causing an action will make it feel like it wasn’t initiated by self even if it sort of was.

      Something similar happens with schizophrenia audio hallucinations and alien hand syndrome.

      Even though the action is initiated by the person it feels foreign.

      Every process in the brain is a loop. Input and output. Or output and input.

      When the second one is impaired (whichever that would be given the situation) there is a loss of “ownership”.

    • scytale@piefed.zip
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      6 days ago

      That’s interesting, thanks for sharing. I guess that kinda makes sense with religion and belief in a higher power.

    • MinnesotaGoddam@lemmy.world
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      6 days ago

      can i watch this please? or get instructions on how to hook up some electrodes that sounds both fascinating to learn about and experience.