This site features things related to my interests, including neurophysiology and transcranial magnetic stimulation (TMS). The EMG, EKG, and EEG sections describe several simple methods that teachers and hobbyists can use to record these signals safely and easily on a laptop.
Although I have also published instructions on how to build a small transcranial magnetic stimulator, you will not find them here. Because the voltages and currents used for TMS are extremely high, and might kill you.
The videos include demonstrations of interference with speech and singing by TMS.
When I get the chance, I am happy to answer e-mails at firstname.lastname@example.org .