Bimanual crossed-uncrossed difference and asynchrony of normal, anterior- and totally-split-brain individuals

▶ Bimanual CUD of total SBs was larger than that of partial SBs and normals. ▶ Asynchrony of total SBs was larger and more variable than that of normals. ▶ Asynchrony of total SBs was more variable than that of partial SBs. ▶ Evidence of independent mechanisms underlying the CUD and bimanual synchronization. ▶ Joint involvement of the anterior and posterior CC in bimanual coordination.