Comparison of transcranial electrical stimulation regimens for effects on inhibitory circuit activity in primary somatosensory cortex and tactile spatial discrimination performance.

•Various tES regimens were compared for effects on somatosensory cortex excitability.•Same regimens were compared for effects on tactile discrimination performance.•tES regimens differentially modulated cortical inhibitory circuits.•These regimens also differentially affected tactile discrimination.•tRNS and anodal tPCS effectively improved tactile discrimination.