“…This rapid understanding phenomenon has been observed under different experimental conditions, in which the perception of the image is difficult or degraded, like during rapid sequential visual presentation tasks (Evans & Treisman, 2005;Potter, 1976;Potter, Staub, & O'Connor, 2004), very short presentation time (Kirchner & Thorpe, 2006;Thorpe, Fize, & Marlot, 1996), backward masking (Bacon-Mace, Mace, Fabre- , dual-task conditions (F. F. Li, VanRullen, Koch, & Perona, 2002), and blur (Oliva & Schyns, 1997;Schyns & Oliva, 1994). Cognitive neuroscience research has shown that these recognition events would occur 150 ms after image onset (Delorme, Rousselet, Mace, & Fabre-Thorpe, 2003;Goffaux et al, 2005;Johnson & Olshausen, 2003;Thorpe et al, 1996). This establishes an upper bound on how fast natural image recognition can be made by the visual system and suggests that natural scene recognition can be implemented within a feedforward mechanism of information processing.…”