Slow Wave Reconstruction with sLORETA (SWRS) is an advanced neuroimaging technique that utilizes electrophysiological recordings to reconstruct brain activity. Developed by researchers at the University of Zurich, SWRS is employed by software developers such as Neuroelectrics. It enables researchers to map slow wave oscillations in the brain, providing insights into neural connectivity and cognitive processes during deep sleep, anesthesia, and other altered states of consciousness.