The sleep EEG multitaper spectrogram reveals patterns of continuous changes in brain oscillation activity during sleep. Characteristic patterns clearly differentiate waking (left) from nonREM (center) ...

On the left there is an oscillogram -- a sequence of levels corresponding to the values of the voltage levels on the microphone membrane of the phrase &laquoKids are talking by the door» told by ...

Instruments typically used to detect the ground motion of earthquakes can also be used to identify the type of aircraft flying far overhead, research ...