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A " microelectrode " is an electrode used in electrophysiology either for recording neural signals or for the electrical stimulation of nervous tissue ( they were first developed by Ida Hyde in 1921 ) .
 Ida Hyde
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Ida Hyde