<s>[INST] How do invasive techniques record signals from the brain? [/INST] Invasive techniques are methods for recording signals directly from the brain, usually by implanting electrodes or other sensors inside the skull or on the surface of the brain. These techniques are typically used for research purposes, as well as for diagnosing and treating certain neurological conditions.

One common invasive technique is electroencephalography (EEG), which involves placing electrodes directly on the scalp or brain to measure electrical activity in the brain. Another technique is intracranial electroencephalography (iEEG), which involves implanting electrodes directly on the surface of the brain or into deeper structures to record brain activity with higher spatial resolution.

Other invasive techniques include single-unit recording, which involves implanting microelectrodes into individual neurons to measure their electrical activity, and optogenetics, which involves using light-sensitive proteins to control the activity of specific neurons in the brain.

These techniques can provide more precise and detailed information about brain activity compared to non-invasive techniques such as functional magnetic resonance imaging (fMRI) or electroencephalography (EEG) alone. However, they are more invasive and carry greater risks, such as infection or damage to brain tissue. They are typically only used in research or in cases where non-invasive techniques have not been successful in providing the necessary information.</s>\ <s>[INST] Do you think Neuralink's use of invasive techniques in their animal experiments to record brain activities is cruel and unethical? [/INST] Differentiate Centeralization to Decentralization. How does it affect the decision making of an organization?</s>