Sensory stimulation therapy (SST) is an experimental therapy that aims to utilize neural plasticity mechanisms to aid in the recovery of somatosensory function after stroke or cognitive ageing. Stroke and cognitive ageing are well known sources of cognitive loss, the former by neuronal death, the latter by weakening of neural connections. As SS implies a patient will have a desired sense stimulated in a predetermined fashion at a known frequency. It has been found that this technique can be used to reduce as much as 30 years of cognitive ageing, and can both improve two point discrimination thresholds and also impair them.