Early emotion discrimination in 8- to 10-year-old children: magnetoencephalographic correlates |
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Authors: | Wessing Ida Fürniss Tilman Zwitserlood Pienie Dobel Christian Junghöfer Markus |
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Affiliation: | Clinic and Polyclinic for Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Münster University Hospital, Münster, Germany. |
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Abstract: | Emotional cues motivate attention and modulate event-related potentials as well as magnetic fields in adults. Central components enhanced by emotional content are Early Posterior Negativity (EPN, 150-300 ms) and Late Positive Potential (LPP, >300 ms). Previous electroencephalography studies in children revealed a differentiation of the late component in response to emotional scenes, but failed to detect an EPN effect. Twenty-two children aged 8-10 years saw 200 arousing pleasant and non-arousing neutral pictures in a rapid serial visual presentation (RSVP) design, while event-related magnetic fields were recorded with whole-head magnetoencephalography (MEG). Analysis of MEG data based on individual picture ratings yielded LPP-m but also EPN-m effects with topography and latency resembling that of adults. Thus, the mechanism of motivated attention at early processing stages (>150 ms) appears mature in children of this age group. |
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