The Starstim eight-channel transcranial electrical stimulation system (Neuroelectrics, Barcelona, Spain) supports non-invasive brain-stimulation research using transcranial direct-current stimulation, transcranial alternating-current stimulation, and transcranial random-noise stimulation. Its multichannel configuration enables flexible stimulation protocols for investigating neural activity, fatigue, pain, and neurorehabilitation. A Polhemus Viper digitization system is also available for accurately recording electrode and sensor positions and improving the reproducibility of neurostimulation and neurophysiological experiments.