A quick peek at electrogastrography (EGG) research
At the READ lab, I'm currently working on a project related to electrogastrography—the study of gastric myoelectric activity. This paper by Xiong et al. (2019) particularly stood out to me. I thought it was interesting how sensitive the digestive system is to biopsychosocial factors.
Based on this paper, EGG seems to be an effective and novel way to measure whether a therapeutic intervention can result in better para/sympathetic nervous system balance and vagal tone. It was definitely fascinating to see that a seemingly simple psychosocial intervention could cause post-meal CPM to return to the norm of ~3cpm vs. the control group. I would be curious to understand the association between attachment styles and gastric myoelectric activity.
Separately, I am also intrigued about the relationship between blood/saliva-based bioinflammatory markers (like IL-6 and cortisol) and gastrointestinal motility in order to further map out patterns of dysfunctional stress responses. Also, in general, I'm curious if the pattern of anxiety being linked to bradygastria, and depression with tachygastria holds true under most conditions, as is mentioned in the Xiong (2019) article, or is this perhaps overly simplistic?
Electrogastrography seems like a particularly novel psychobiological method of understanding the role and effect of emotions, and I'm looking forward to exploring it in detail.