Alpha rhythm variations in EEGS recorded before and after work in a sample of F-S engineers

An EEG study was carried out on twelve voluntary F.S. drivers. Over a period of three months, 60 EEG records were taken before departure and after the arrival at the end of a 3 1/2 hr. driving shift. The frequence spectrum and width of the band, limited to rhythm was analyzed by means of the algorhythm of the fast Fourier transform.