Body Surface Gastric Mapping to Evaluate Patients With Upper Gastrointestinal Symptoms and Controls

Inclusion Criteria: Healthy Population: * Adults aged 18 years and over * Able to understand the risks/benefits of the study * Able to give written informed consent * No active gastrointestinal symptoms or pathology * Resides in the Calgary, Alberta area Patient Population: * Adults aged 18 years and over * BMI \> 35 * Able to understand the risks/benefits of the study * Able to give written informed consent * Patients meeting Rome IV Criteria for functional dyspepsia, or a nausea and vomiting disorder * Patients with gastroparesis defined on a standardized gastric scintigraphy study * Resides in the Calgary, Alberta area Exclusion Criteria: Healthy Population: * Under 18 years of age * BMI \> 35 * Taking medications known to affect GI motility or the mid-gut axis (eg antidepressants, anti-anxiety medication, prokinetics, opiates) * Metabolic, neurogenic, or endocrine disorders known to cause gastrointestinal dysmotility (eg. Multiple Sclerosis, Parkinson's disease, hypothyroidism) * Known current GI infection (includes H. pylori when being actively treated) * Known current inflammatory bowel disease * Known current GI malignancy * Known GI functional or motility disorders * Previous gastroduodenal surgery * GI functional or motility disorders * Pregnant women * Open abdominal wounds or abdominal skin not intact (eg rash, abrasions, weeping tissue) * Fragile skin evidence by high susceptibility to skin tears or skin that bruises and breaks easily * Allergy to adhesives…