Trace rhythm recruitment (TRR)--CR analogue to time was studied appearing in response to prolonged electrocutaneous stimulation of the forelimb of the alert rabbit with the frequency 0.5-1-2 Hz. The activity was recorded of 180 cells of the sensorimotor cortex before (80) and after (100) periodical stimulation during 10-20 min. The first series of rhythmic stimulation led to a short-term TRR of the stimulation frequency, the following series formed a clear TRR, preserved for several days. The possibility was revealed of" relearning" of neurones at stimulation rhythm change. The ability of TRR phenomenon of extinguishment, prolonged preservation and reproduction of traces," relearning" brings it nearer to the processes, analogous to the temporal connection. The ability to reveal distinctly and to quantitatively estimate the characteristics of the applied stimulus fixated by the neurones, makes this model perspective for comparable study of the memory traces at the neuronal level in the animals of various ages.