The multiple correlation method has been applied to the study of concurrent auroral and magnetic pulsations on the basis of videotapes of all-sky television camera auroral records and induction magnetometer records. The results are (1) the ground magnetic pulsations below pulsating auroras are well represented by a regression model where the magnetic change is expressed as a linear combination of auroral luminosity fluctuations at various parts of the sky, (2) the magnetic variation observed at a single station can be broken down into the magnetic contributions from various auroral patches, and subsequently, (3) the magnetic deflections at various ground points below a pulsating auroral form can be estimated even when many pulsating patches appear at the same time. It is also shown that (4) the horizontal magnetic deflections deduced from observations by use of this technique are fully explained by the combination of ionospheric and field-aligned electric currents which are theoretically expected to be induced in a near a local enhancement of conductivity under the existence of a uniform, ambient electric field. This study thus gives a definite proof that the ground magnetic pulsation which occurs concurrently with auroral pulsations in the auroral oval is the result of successive growth and decay processes of the localized electric currents in and in the vicinity of pulsating auroral forms, which are caused by a conductivity pulsation due to the pulsating precipitation of auroral electrons in conjunction with the convection electric field. The model calculation also predicts the distribution pattern and intensity of the fluctuating electric fields below pulsating auroral patches.