Basal electrical rhythm

The basal electrical rhythm (BER), also known as slow wave activity, refers to the rhythmic electrical activity produced by pacemaker cells in certain tissues of the body, primarily in the gastrointestinal (GI) tract. These electrical waves facilitate the coordinated contractions of smooth muscle, which are essential for digestive movements. 1. **Location**: In the GI tract, the BER is primarily generated by specialized cells called interstitial cells of Cajal (ICC), which are located between the layers of the smooth muscle.