Our laboratory is equipped with the world's highest density 256-channel EEG recording and analysis system (Fig. 1). EEG has the greatest temporal resolution among various non-invasive techniques for studying human brain functions. Although it usually suffers low spatial resolution, this system is capable of recording EEG at excellent spatial resolution in three-dimensional space.
Electroencephalogram (EEG) reflects the sum of activities of a large number of neurons interacting dynamically in network. Sensory, motor, or cognitive events modulates the on-going EEG, the small amplitude change of which can be observed as evoked potential (EP) or event-related potential (ERP) by the method of time-locked averaging. We use this technique to investigate the neural substrates of higher brain functions such as music and language (Refs 1–3, Fig. 2).
Center for Integrated Human Brain Science