The positive relationship in eye dominance between onset and ongoing rivalry concurs with previous studies (Dieter, Sy, & Blake,
2016; Leat & Woodhouse,
1984). For example, Leat and Woodhouse (
1984) observed strong correlations in eye dominance between onset and ongoing rivalry. It is important to note, however, that there are other factors, such as eye movements, stimulus location, and stimulus characteristics, that can alter and attenuate biases in eye dominance (Dieter, Sy, & Blake,
2016; Dieter et al.,
2017; Kalisvaart, Rampersad, & Goossens,
2011; for review, see Stanley et al.,
2011). For example, Dieter et al. (
2017) explored individuals' ongoing rivalry biases for eye and color within the visual field and observed idiosyncratic patterns of biases for both eye and color within the visual field. The origin of a perceptual dominance wave during nonexclusive rivalry might also be sensitive to such spatial anisotropies in eye dominance (Paffen, Naber, & Verstraten,
2008). In addition, it would be interesting to assess whether the timing and the speed at which perceptual dominance switches between the eyes (Genç, Bergmann, Singer, & Kohler,
2013; Genç et al.,
2011; Knapen, van Ee, & Blake,
2007; Lee, Blake, & Heeger,
2005; Naber, Carter, & Verstraten,
2009; Wilson, Blake, & Lee,
2001) are affected by eye dominance. The above observations prevent us from generalizing our findings and concluding that onset and ongoing rivalry share a singular mechanism underlying eye dominance. Before this can be concluded, more work needs to be conducted to map out all the factors that influence eye dominance.