A persistent problem in the mechanical characterization of brain tissue are inconsistent responses, when experiments in different time or length scales are conducted. However, for a model that reliably predicts the viscoelastic behavior of the tissue over an extended time range, it is essential to include multi-modality tests that cover both the time and frequency domain in the calibration process. This contribution aims to combine the mechanical responses conducted in varying time scales. Porcine brain tissue was tested with two different experimental techniques. At the rheometer, the material response in the time domain was examined. The high-frequency behavior of the tissue was studied via magnetic resonance elastography. To compare the results in the different time scales, the viscoelastic storage and loss modulus were calculated. The combined study of the moduli indicates that the tissue is more elastic in the quasi-static regime and more viscous at high frequencies.