“…In fact, in these studies, the left field bias was only significant in comparison to the lower central target, but not the upper right (Bonneh et al, 2001;Nuruki, Oliver, Campana, Walsh, & Rothwell, 2013), which can be also explained by upper field bias. The only study that utilised all four spatial quadrants (the lower left, lower right, upper left and upper right) in a single experimental paradigm is from our group (Thomas, Davidson, Zakavi, Tsuchiya, & van Boxtel, 2017). In that study, we found significantly more and longer disappearances for targets in the upper compared to the lower visual field, while no significant differences were found between the left and right visual fields in either the upper or lower fields.…”