Poster E13, Monday, March 27, 2:30 – 4:30 pm, Pacific Concourse
ERPs to the Military Affective Picture Set (MAPS)
Marianna Eddy1,2, Mary Boomhower1, Breanne Hawes1, Jennifer Rourke1, Caroline Mahoney1,2; 1U.S. Army Natick Soldier Research, Development, and Engineering Center, 2Center for Applied Brain and Cognitive Sciences
The Military Affective Picture Set (MAPS) was developed to provide relevant affective images for the investigation of cognitive and emotional processing in Soldiers. The current study investigated the electrophysiological correlates of emotional responses to this image set in order to provide further evidence that these images are effective at inducing emotional responses consistent with labels given to the images. While extensive data exists for the civilian emotional dataset, supporting that the the International Affective Picture Set (IAPS) evokes particular affective states, there is limited data on the relatively new MAPS. In this study, a group of active duty US Army Soldiers viewed positive and negative valenced images that were either high or low arousal. While viewing the images, participants rated the images on the self-assessment manikin (SAM) on valence (happy-sad) and arousal (excited-dull) while event-related potentials (ERPs) were recorded. Consistent with previous ERP results for the IAPS, the MAPS images that were higher in arousal produced larger positive going P300 and LPP effects compared to lower arousal images. However, within low arousal images there was no difference between positive and negative images on the P300 or LPP, however, high arousal negative images produced a larger LPP than high arousal positive images, but did not differ on the P300. These results suggest the MAPS are effective at eliciting emotional responses in active duty military.
Topic Area: EMOTION & SOCIAL: Emotional responding