Currently, brain recording and/or brain stimulation is used almost entirely for medical or research purposes. Invasive surgery is generally required to read neural signals with high temporal and spatial resolution. High resolution of neural signals enables researchers to decode a brain’s underlying intentions, sensations, reactions, etc. rather reliably, if only in constrained environments. With regard to stimulation, researchers have demonstrated the ability to trigger different types of effects. For example, stimulating the reticular formation can cause a subject to become awake; stimulating the amygdala can evoke fear; stimulating the motor cortex can trigger movement; stimulating the visual cortex can cause a subject to see light flashes. However, the state of the art is neither able to decode complex and unrestrained thoughts nor cause a subject to have a particular “target” complex thought. At least not yet.
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