(Video: Mapping the brain through electrical stimulation) Electrical stimulation of the brain indicates that

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The video shows that different regions of the brain are activated by electrical stimulation and that these regions correspond to different functions. This supports the idea that various brain regions have particular functions. There is no evidence or discussion in the video about all regions of the brain being highly sensitive to pain, all regions of the brain being involved in speech, or us typically using only about 10 percent of our neural capacity.

(Video: Mapping the Brain Through Electrical Stimulation) Electrical Stimulation of the Brain