| http://www.w3.org/ns/prov#value | - Researchers then insert a light source, such as an optical fiber, into the brain to control the selected neurons.Such implants can be difficult to insert, however, and can be incompatible with many kinds of experiments, such as studies of development, during which the brain changes size, or of neurodegenerative disorders, during which the implant can interact with brain physiology.
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