Cross-frequency dynamics of neuromagnetic oscillatory activity : Two mechanisms of emotion regulation

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2012
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Psychophysiology. 2012, 49(12), pp. 1545-1557. ISSN 0048-5772. eISSN 1540-5958. Available under: doi: 10.1111/j.1469-8986.2012.01484.x
Zusammenfassung

Hemodynamic and electromagnetic neuroimaging suggests a sequence of intraregional and interregional activity during emotion processing. Oscillatory activity within trials may offer insight into neural mechanisms involved in this process. MEG was measured in 24 subjects during passive viewing of neutral and unpleasant pictures and emotion regulation by cognitive reappraisal. Regulation prompted more gamma increase and alpha decrease to picture onset than did passive viewing. Source analysis confirmed differential modulation of these power changes in occipitoparietal regions during passive viewing and larger power changes in prefrontal regions during regulation. Local coupling of alpha phase to gamma amplitude within a medial prefrontal region and long-range synchrony of medial prefrontal, occipital, and temporoparietal regions index mechanisms of prefrontal top-down contribution to emotion processing.

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Fachgebiet (DDC)
150 Psychologie
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Magnetoencephalography, Emotion regulation, Phase synchrony, Brain oscillations
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ISO 690POPOV, Tzvetan G., Astrid STEFFEN, Nathan WEISZ, Gregory A. MILLER, Brigitte ROCKSTROH, 2012. Cross-frequency dynamics of neuromagnetic oscillatory activity : Two mechanisms of emotion regulation. In: Psychophysiology. 2012, 49(12), pp. 1545-1557. ISSN 0048-5772. eISSN 1540-5958. Available under: doi: 10.1111/j.1469-8986.2012.01484.x
BibTex
@article{Popov2012-12Cross-22630,
  year={2012},
  doi={10.1111/j.1469-8986.2012.01484.x},
  title={Cross-frequency dynamics of neuromagnetic oscillatory activity : Two mechanisms of emotion regulation},
  number={12},
  volume={49},
  issn={0048-5772},
  journal={Psychophysiology},
  pages={1545--1557},
  author={Popov, Tzvetan G. and Steffen, Astrid and Weisz, Nathan and Miller, Gregory A. and Rockstroh, Brigitte}
}
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