In my lab, we study how the brain performs online processing, focusing on the visual domain. The cognitive structure responsible for these types of mental operations is called ‘Visual Working Memory’, an online buffer capable of holding a limited amount of information ready to be manipulated or accessed by high cognitive functions. My lab has 2 EEG systems located in electrical shielded rooms.  We mostly rely on an event-related potential termed the CDA (contralateral delay activity), a marker indicating the amount of visual working memory capacity at any given moment.