From all-sky TV and meridian scanning photometer data, obtained at Poker Flat, Alaska, during the 1982/1983 winter, 12 nights with extensive displays of pulsating aurora were selected for analysis. The majority of the pulsations were located near the equatorward edge of the proton aurora as identified by the H&bgr; emission; however, on two nights, pulsating aurora was also observed embedded in the main region of the proton aurora. The period of the pulsations varied from 3 to 25 s and appeared to be correlated with the H&bgr; intensity. The short periods corresponded to weak H&bgr; emissions while no pulsations were observed above 80 R in H&bgr;. The change in period appeared to be caused mainly by a variation in the time between individual pulses.