A collection of dedicated electrodes intended to support a variety of electrophysiological measurements [e.g., electrocardiography (ECG), electroencephalography (EEG), electromyography (EMG), intraoperative monitoring (IOM), evoked potentials (EP)]. It includes both invasive (e.g., subdermal needle electrode) and noninvasive (i.e. skin surface) electrodes, and may include electrodes intended for stimulation; at least one reusable electrode is included. Supportive devices such as leads and adaptors may be included, however it does not include any monitors/monitoring devices. This is a reusable device.