21. In the 1960s, Kasamatsu and Hirai used Electroencephalography to monitor the brains of Zen meditators. 22. The use of electroencephalography ( EEG ) often plays a role in the diagnosis of brain tumors. 23. His fields of research included electroencephalography , sensory deprivation, alcoholism, suicide and other clinical subjects. 24. We can pick up simple overall, slow speed activity this way ( See : Electroencephalography ). 25. Roy, incarcerated and wearing an electroencephalography device, watches the sunrise as his eyes glow faintly. 26. Electroencephalography ( EEG ) records the brain s electrical activity and can identify changes that occur over milliseconds.27. Le is a co-founder of software company Emotiv which specialises in electroencephalography ( EEG ) headsets. 28. During active thinking, electroencephalography reveals a strong appearance of gamma range oscillation from around 20 50 Hz. 29. Electroencephalography , EEG, can also be used to screen for ulegyria, though MRI is still preferred.30. EEG ( electroencephalography ) measures voltage fluctuations along the scalp that result from neuron activity in the brain.