Position of special electrodes with respect to the underlying brain

Standard temporal electrodes (F7/F8 and T7/T8) lie over the Sylvian fissure, and record infra- and suprasylvian regions. Special inferior temporal electrodes (F9/F10 and T9/T10) record the lateral temporal region. Superficial anterior temporal electrodes (T1/T2; usually positioned slightly anterior to what is shown here) record the anterior temporal region, as do mandibular notch electrodes (Mn1/Mn2). The inferior temporal region can be recorded by ear (A1/A2), sphenoidal (Sp1/Sp2) and nasopharyngeal electrodes (Np1/Np2).