“…Robust homotopic RSFC in areas with sparse callosal connectivity, such as primary visual cortex or amygdala, suggests contributions beyond direct callosal connections (Lowe et al, 1998; Cordes et al, 2000; Vincent et al, 2007; Di Martino et al, 2008; Roy et al, 2009). Functional connectivity between these areas may reflect the contribution of subcortical hubs for interhemispheric communication, including the superior colliculi and brainstem (Lyubimov et al, 1983; Savazzi et al, 2007; Uddin et al, 2008). Conversely, the exceptionally strong VMHC observed in subcortical regions may reflect the contributions of bilateral cortical afferent projections, rather than direct connectivity (Schulte and Muller-Oehring, 2010).…”