Timeline milestone
Electrical Activity Is Recorded From the Brain
From From Brain Signals to Digital Speech: The Evolution of Brain-Computer Interfaces
-
Discovery
Electrical Activity Is Recorded From the Brain
Richard Caton detected changing electrical currents on the exposed brains of animals, establishing that brain activity produced measurable signals.
Caton's galvanometer measurements did not create a computer interface, but they supplied its essential premise: neural activity leaves an electrical trace that instruments can detect. The recordings required direct access to the brain and revealed little about how particular intentions were encoded.
Sources & references 1 source
