Mental rotation impairs attention shifting and short-term memory encoding: Neurophysiological evidence against the response-selection bottleneck model of dual-task performance

► In a dual task with mental rotation as Task 1 and a visual-spatial attention task as Task 2, RT, N2pc and SPCN are modulated when mental rotation or SOA are varied. ► Mental rotation and visual-spatial attention interact in capacity-limited processing mechanisms. ► Response selection is not pivotal in dual-task delays and response selection, mental rotation and visual-spatial attention are likely to share a common resource.