TY - JOUR
T1 - Biofeedback produced slow brain potentials and task performance
AU - Lutzenberger, Werner
AU - Elbert, Thomas
AU - Rockstroh, Brigitte
AU - Birbaumer, Niels
PY - 1982
Y1 - 1982
N2 - Twenty subjects learned to control slow potential (SP) shifts of the brain by means of a biofeedback procedure. Depending upon the pitch of a signal tone, negative SP shifts had to be increased or reduced during intervals of 6 sec each. Visual feedback of the actual SP shift was given. Blocks of training trials alternated with blocks of test trials without any feedback of the SPs. At the end of every test trial a simple arithmetic problem had to be solved by the subjects. Subjects performed the computation in a shorter time interval if an increased negativity preceded task onset as compared to slower response times during suppression of negativity. Results suggest that cortical negativity reflects unspecific preparation for cerebral performance.
AB - Twenty subjects learned to control slow potential (SP) shifts of the brain by means of a biofeedback procedure. Depending upon the pitch of a signal tone, negative SP shifts had to be increased or reduced during intervals of 6 sec each. Visual feedback of the actual SP shift was given. Blocks of training trials alternated with blocks of test trials without any feedback of the SPs. At the end of every test trial a simple arithmetic problem had to be solved by the subjects. Subjects performed the computation in a shorter time interval if an increased negativity preceded task onset as compared to slower response times during suppression of negativity. Results suggest that cortical negativity reflects unspecific preparation for cerebral performance.
UR - http://www.scopus.com/inward/record.url?scp=0019980925&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0019980925&partnerID=8YFLogxK
U2 - 10.1016/0301-0511(82)90018-7
DO - 10.1016/0301-0511(82)90018-7
M3 - Article
C2 - 7104426
AN - SCOPUS:0019980925
VL - 14
SP - 99
EP - 111
JO - Biological Psychology
JF - Biological Psychology
SN - 0019-493X
IS - 1-2
ER -