Memory device wherein biologically active frequencies are impressed i.e. recorded, storing the information therein obtained by the following steps:(a) generating biologically active frequency data(b) loading the frequency data of step (a) in a computer and digitally processing the same therein by means of a computer programme for rendering input data into image format data(c) downloading the processed frequency data of step (b) into a memory device, so obtaining a conditioned memory device (d) testing the biologic effect of the conditioned memory device of step (c) and repeating steps (a) to (d) till testing gives biologically useful effects,whereby the memory device constitutes a physical carrier of biologically active frequenciesand physical carrier of biologically active frequencies obtained by conditioning it thereby.