Publikation: The Contingent Magnetic Variation in Migraine
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Migraine is characterized by an increased contingent negative variation. Separate comparisons of the early and late component showed that it was the former rather than the latter that was elevated. The function and localization of the early component are as yet poorly understood. The magneto-encephalogram was recorded in 16 patients with migraine and 17 healthy control subjects during a forewarned reaction time task. Neuromagnetic data were recorded with a 37-channel neuromagnetometer with the sensors being placed above the left hemisphere contralaterally to the side of the acoustic stimulation and the motor reaction. Subjects responded to the second of two low intensity sound stimuli that were administered with an interval of 4.5 s. Migraine patients exhibited a significantly higher amplitude of the early component of the contingent magnetic variation (CMV) than controls. Groups did not differ with regard to the amplitude of the late component. Modeling the sources with a single moving equivalent current dipole (ECD) provided a high goodness of fit for the M100 (magnetic N1) in both groups and for the early component of the CMV in migraineurs but not controls. The activity of the early component was centered medially with respect to the M100-ECDs and more laterally so in migraine patients than in controls.
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SARTORY, Gudrun, Veronika GILLESSEN, Karl-Heinz GROTEMEYER, Thomas ELBERT, 1999. The Contingent Magnetic Variation in Migraine. In: Journal of Psychophysiology. 1999, 13(4), pp. 215-223. Available under: doi: 10.1027//0269-8803.13.4.215BibTex
@article{Sartory1999Conti-11283,
year={1999},
doi={10.1027//0269-8803.13.4.215},
title={The Contingent Magnetic Variation in Migraine},
number={4},
volume={13},
journal={Journal of Psychophysiology},
pages={215--223},
author={Sartory, Gudrun and Gillessen, Veronika and Grotemeyer, Karl-Heinz and Elbert, Thomas}
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