Publikation: Area-specific self-regulation of slow cortical potentials on the sagittal midline and its effects on behavior
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Exteroceptive feedback was given for negative and positive shifts in slow potentials (SPs) recorded from Fz, Cz, or pz (between groups design). Slow potentials at the feedback site were referred to adjacent scalp and non-cephalic electrodes, so as to confine SP shifts to the feedback location. Area-specific regulation of SPs was obtained at each midsagittal site after 3 days of feedback training. Subjects reported sensorimotor and emotional arousal when negative SP shifts were trained frontally, but not when negative shifts were' trained parietally (cognitive/attentional strategies reported after parietal feedback), Area-specific regulation of SPs was subsequently abolished when behavioral tasks were added to further probe frontal/parietal differences (dual-task procedure). These findings indicate that area-specific self-regulation of SPs is possible on the sagittal midline, and that self-regulated parietal SPs (in contrast to frontal ones) arise from non-motoric generators. The source of SP self-regulation was more readily probed by verbal reports of feedback strategy than by study of dual-task relations, because feedback control was disrupted by the dual-task requirement.
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BIRBAUMER, Niels, Larry E. ROBERTS, Werner LUTZENBERGER, Brigitte ROCKSTROH, Thomas ELBERT, 1992. Area-specific self-regulation of slow cortical potentials on the sagittal midline and its effects on behavior. In: Electroencephalography and Clinical Neurophysiology. 1992, 84(4), pp. 353-361. Available under: doi: 10.1016/0168-5597(92)90088-SBibTex
@article{Birbaumer1992Areas-11059, year={1992}, doi={10.1016/0168-5597(92)90088-S}, title={Area-specific self-regulation of slow cortical potentials on the sagittal midline and its effects on behavior}, number={4}, volume={84}, journal={Electroencephalography and Clinical Neurophysiology}, pages={353--361}, author={Birbaumer, Niels and Roberts, Larry E. and Lutzenberger, Werner and Rockstroh, Brigitte and Elbert, Thomas} }
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