Gastrointestinal diagnostic aid

A system for mapping gastric activity of a patient, the system comprising:

• an electrode array patch having a plurality of electrodes configured to measure electrical signals associated with gastric activity of the patient;
• and
• a processor configured to:
• receive the measured electrical signals from the electrode array patch over a continuous time period of at least 2 hours;
• concurrently receive patient symptom information over the entire continuous time period with the measured electrical signals;
• determine one or more normalized biometrics over at least a portion of the continuous time period from the measured electrical signals;
• correlating the one or more normalized biometrics and a symptom burden from the patient symptom information;
• determine a measure of correlation over the continuous time period;
• determine a measure of temporal association in at least one time interval over the continuous time period between one or more normalized biometrics and at least two symptoms from the patient symptom information;
• and
• determine a gastrointestinal phenotype of the patient based at least in part on the measure of correlation and the measure of temporal association, wherein the phenotype comprises at least one of a sensorimotor phenotype, a neuromuscular phenotype, a post-gastric phenotype, an activity-alleviated phenotype, or a continuous phenotype;
• and
• generate a report comprising at least the determination of the gastrointestinal phenotype.