Murugaraja V, et al. - The aim of this observational study was to examine the feasibility, tolerability and clinical utility of transcranial direct current stimulation (tDCS) in patients with mild cognitive impairment (MCI). The data disclosed that tDCS is harmless and potentially useful in combating cognitive deficits in patients with MCI as well as gives a framework for further studies with better methodology (randomized and sham controlled trial) to investigate the same.