Electrophysiological Examination of the Nature of the Response-Related Interference While Dual-Tasking: Is It Motoric or Attentional?

There are two conflicting hypotheses regarding the nature of the motor-related interference in dual-tasking. The motor-bottleneck hypothesis suggests that motor-related interference is a purely motoric interference while the response-monitoring hypothesis suggests that it is an attentional interference. Both our behavioral and electrophysiological data supported the former over the latter.