@article{ref1,
title="Dual-task repetition alters event-related brain potentials and task performance",
journal="Clinical neurophysiology",
year="2012",
author="Kida, Tetsuo and Kaneda, Takeshi and Nishihira, Yoshiaki",
volume="123",
number="6",
pages="1123-1130",
abstract="OBJECTIVE: We examined the modulation of event-related brain potentials (ERPs) and the accuracy of sensori-motor coordination on short-term repetition of the concurrent performance of a somatosensory discrimination (oddball) task and a visuo-motor tracking task. METHODS: The subjects concurrently performed visuomotor tracking and somatosensory oddball tasks. In the dual-task condition, the subjects performed the visuomotor tracking and somatosensory oddball tasks concurrently for about an hour. In the oddball-only condition, they performed just the oddball task for the same period. RESULTS: Tracking performance improved with task repetition. The amplitude of the P300 elicited by somatosensory stimulation in the oddball-only condition decreased significantly with task repetition, whereas in the dual-task condition, it showed a complex pattern of change. The earlier responses were decreased in amplitude in the dual-task condition compared to the oddball-only condition, and gradually decreased with task repetition in both conditions. CONCLUSIONS: Dynamic changes in ERPs and task performance with dual-task repetition support the idea that dual-task repetition produces changes in resource allocation following the automation of stimulus processing in addition to so-called habituation. SIGNIFICANCE: This study also provides evidence for use of ERP amplitudes as physiological indices of functionally different types of resources.<p /> <p>Language: en</p>",
language="en",
issn="1388-2457",
doi="10.1016/j.clinph.2011.10.001",
url="http://dx.doi.org/10.1016/j.clinph.2011.10.001"
}