Researchers have recently discovered a new origin of deep brain waves, challenging the traditional understanding of their source. The study, conducted by scientists at the University of California, Irvine, demonstrates that slow waves and sleep spindles can originate from axons within the hippocampus’ cornu ammonis 3 (CA3) region.
Brain waves are oscillating electrical voltages in the brain, measuring just a few millionths of a volt. They are categorized into five widely recognized types, including slow waves and sleep spindles, which are associated with deep sleep and memory consolidation.
The traditional view held that deep brain waves originated from a single brain circuit linking the thalamus and cortex. However, the new research reveals that axons in the hippocampus’ CA3 region also contribute to the generation of these waves. This finding suggests that deep brain waves may have multiple origins, rather than being solely produced by a single circuit.