TY - JOUR
T1 - Area-specific self-regulation of slow cortical potentials on the sagittal midline and its effects on behavior
AU - Birbaumer, Niels
AU - Roberts, Larry E.
AU - Lutzenberger, Werner
AU - Rockstroh, Brigitte
AU - Elbert, Thomas
PY - 1992
Y1 - 1992
N2 - Exteroceptive feedback was given for negative and positive shirts 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.
AB - Exteroceptive feedback was given for negative and positive shirts 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.
KW - Feedback learning
KW - Slow cortical potentials
KW - Stimulus preceding negativities
KW - Threshold regulation of EEG
UR - http://www.scopus.com/inward/record.url?scp=0026691995&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026691995&partnerID=8YFLogxK
U2 - 10.1016/0168-5597(92)90088-S
DO - 10.1016/0168-5597(92)90088-S
M3 - Article
C2 - 1378005
AN - SCOPUS:0026691995
VL - 84
SP - 353
EP - 361
JO - Electroencephalography and Clinical Neurophysiology - Evoked Potentials
JF - Electroencephalography and Clinical Neurophysiology - Evoked Potentials
SN - 0168-5597
IS - 4
ER -