MP Research Catalog - Biopac

28EGG ElectrogastrogramFeaturesInvasive/Noninvasive ElectrodeMeasurements Q29The EGG100C amplifier can be used to isolate elementsof the gastrointestinal system for recording, through theuse of either surface or needle electrodes. The EGG canMeasure the time-varying electrical activity of thegastrointestinal system of human and animal subjects,invasively or noninvasively. Gastrointestinal motility isdirected by chemical, neural and myogenic controlsystems. The myogenic control system is manifested byslow wave cyclic depolarizations of smooth muscle cellscalled the electrical control activity (ECA). This myogenicsystem and the resulting electrical response activity (ERA)influence the contraction patterns in the stomach, smallintestine and colon. The myogenic system affects thefrequency, coordination, direction and velocity of thecontractions. The combined ECA and ERA signalsconstitute the electrogastrogram (EGG) recorded bythe EGG100C.• Invasive/Noninvasive Electrode Measurements• Gastric Myoelectric Activity (Smooth Muscle)• Gastric Slow Wave Propagation• Gastrointestinal Motility Analysis• Peristaltic (Slow Wave) Propagation• Migrating Myoelectric Complex• Animal Studies• Automatic Data Reductionbe recorded cutaneously with disposable or reusable surfaceelectrodes. Alternatively, the EGG can be recordedusing needle electrodes or custom electrode arrays fordirect smooth-muscle measurements of the stomach,small intestine and colon. For measurements inside layersof smooth muscle tissue, use the EL450 Teflon ® -coatedneedle electrodes. Up to 16 EGG100C amplifiers can beused simultaneously to record surface or subcutaneoussignals. JUMP100C jumper connectors are used toreference amplifier inputs to satisfy any combination ofmonopolar or bipolar recording modes.