Previous event-related potential (ERP) studies have shown that the N170 to faces is modulated by the emotion of the face and its context. However. it is unclear how the encoding of emotional target faces as reflected in the N170 is modulated by the preceding contextual facial expression when temporal onset and identity of target faces are unpredictable. In addition. https://www.roneverhart.com/Grace-Design-M801-MK2-High-Fidelity-p15168/