Dual-hemisphere transcranial direct current stimulation improves performance in a tactile spatial discrimination task

Highlights • Dual-hemisphere transcranial direct stimulation (tDCS) is a novel and powerful strategy to improve human cognitive and motor function, but its effect on somatosensory function remains unknown. • We demonstrated that dual-hemisphere tDCS over the primary somatosensory cortex facilitates greater improvements for performance in a tactile discrimination task in healthy adults compared with uni-hemisphere and sham tDCS. • Dual-hemisphere tDCS might be useful to improve sensory function in patients with sensory dysfunctions.