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Exploring the role of spatial frequency information during neural emotion processing in human infants

MPG-Autoren
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Jessen,  Sarah
Max Planck Research Group Early Social Development, MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Department of Neurology, University of Lübeck, Germany;

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Grossmann,  Tobias
Max Planck Research Group Early Social Development, MPI for Human Cognitive and Brain Sciences, Max Planck Society;
Department of Psychology, University of Virginia, Charlottesville, VA, USA;

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Zitation

Jessen, S., & Grossmann, T. (2017). Exploring the role of spatial frequency information during neural emotion processing in human infants. Frontiers in Human Neuroscience, 11: 486. doi:10.3389/fnhum.2017.00486.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002E-18B6-0
Zusammenfassung
Enhanced attention to fear expressions in adults is primarily driven by information from low as opposed to high spatial frequencies contained in faces. However, little is known about the role of spatial frequency information in emotion processing during infancy. In the present study, we examined the role of low compared to high spatial frequencies in the processing of happy and fearful facial expressions by using filtered face stimuli and measuring event-related brain potentials (ERPs) in 7-month-old infants (N = 26). Our results revealed that infants’ brains discriminated between emotional facial expressions containing high but not between expressions containing low spatial frequencies. Specifically, happy faces containing high spatial frequencies elicited a smaller Nc amplitude than fearful faces containing high spatial frequencies and happy and fearful faces containing low spatial frequencies. Our results demonstrate that already in infancy spatial frequency content influences the processing of facial emotions. Furthermore, we observed that fearful facial expressions elicited a comparable Nc response for high and low spatial frequencies, suggesting a robust detection of fearful faces irrespective of spatial frequency content, whereas the detection of happy facial expressions was contingent upon frequency content. In summary, these data provide new insights into the neural processing of facial emotions in early development by highlighting the differential role played by spatial frequencies in the detection of fear and happiness.