Lambda Waves

Excerpt

The electroencephalographic (EEG) signal is a bioelectric potential related to brain activity recorded on the scalp with electrodes and appropriate instrumentation. The system for measuring brain bioelectric potentials has, indeed, the function of taking the weak electrical signal on the scalp, increasing its amplitude, processing it (including digitization), and, finally, registering it. Increasingly complex processing of the raw signal (e.g., processed EEG through Fourier analysis or Joint Time-Frequency Analysis, JTFA, and dedicated algorithms) allows the use of the signal in different fields of application such as general anesthesia and for research purposes (e.g., neuroscience, and cognitive psychology).