ABSTRACT
Limitations on dual-task performance differ systematically depending on the cerebral localization of the control centers involved. Computer-based single-channel and multichannel models seem insufficient to account for these differences. An alternative notion, the functional cerebral distance concept, seems to account for the data at hand. This states that the limitations on dual-task performance are due to intertask interference within a single highly linked “cerebral space.” The degree of interference is an inverse function of the “functional distance” between the cerebral control centers. The more neuron-ally interconnected they are, the more mutually interfering cross-talk they generate when orthogonally active. But, conversely, motor overflow and transfer of training is greater between functionally close (highly interconnected) cerebral control centers.
