Sentence:  The <WSD>brainist</WSD> sat in a comfortable chair at stage center wearing a high-density EEG cap. Right and left of the stage, elevated speakers presented a recorded audience introduction and subject instructions. These included a brief (few word) description of the feeling the brainist had used to described the feeling he associated with each drone sound following training sessions. 
Meaning of the word marked with <WSD> tags:  One who creates music by re-experiencing emotions while attached to an EEG cap.