Microwave Encephalography (MWEG) Reveals a Novel Electromagnetic Correlate of Higher Nervous Activity

The search for physical correlates of higher nervous activity remains a fundamental challenge in neuroscience. Here we report the discovery of a previously unknown electromagnetic phenomenon – the brain’s own ultra weak microwave emissions in the 1–5 GHz range, detected non invasively using a novel method called microwave encephalography (MWEG). Through systematic experiments spanning 2016–2025, we demonstrate that these signals are endogenous, arising from neural activity rather than thermal noise or external interference. Using a simple light/darkness visual paradigm, we found a robust functional hemispheric asymmetry: the right occipital region exhibited significantly higher emission in darkness (p < 0.001), whereas the left occipital region was more active in light (p < 0.001). This pattern was replicated in a group study (three subjects, p < 0.05 for right, p < 0.01 for left). The signals represent a modulation of the thermal background by cognitive state, providing a new physical dimension of brain function. Two complementary mathematical models are proposed – an energy based model linking optical input to microwave emission, and an information based model interpreting spectral changes as structural pattern overlap with memory engrams. These findings open a new avenue for non invasive study of cognitive processes and may have future applications in neurodiagnostics.