“…Brain lesions studies (i.e., frontal-lobe craniotomy versus parietal craniotomy/healthy adults; Ricci and Blundo, 1990; Meenan and Miller, 1994; Yacorzynski and Davis, 1945) as well as imaging studies have implicated fronto-parietal networks in bistable perception (Britz, Landis, & Michel, 2009; Knapen, Brascamp, Pearson, van Ee, Blake, 2011; Rees and Lavie, 2001; Slotnick and Yantis, 2004; Sterzer and Kleinschmidt, 2007; Tong, Wong, Meng, and McKeef, 2002; Weilnhammer, Ludwig, Hesselmann, Sterzer, 2013), suggesting that attention-related brain areas support spontaneous perceptual alternations by sending top-down signals to guide activity in visual cortex towards one perceptual representation or the other (see Blake & Logothetis, 2002, Knapen, Brascamp, Pearson, van Ee, Blake, 2011; Leopold & Logothetis, 1999). …”