Our new paper just came out in PNAS: O’Reilly Croxson et al. Causal effect of disconnection lesions on interhemispheric functional connectivity in rhesus monkeys.
Sectioning the corpus callosum in monkeys leads to breakdown in functional connectivity between the hemispheres. However, when the anterior commissure is left intact, a surprising amount of functional connectivity between the hemispheres remains. The relationship between cortico-cortical structural connections and functional connectivity is not as simple as we once thought.
