High-frequency broadband activity (HFB) tracks local activity from populations of neurons, but has been limited to invasive measures due to signal drop off through the skull. We reveal that HFB measured noninvasively can distinguish wake from sleep states in infants. The presence of both thin skull and soft spots (fontanelles) between skull plates that have not yet fused creates the environment needed for HFB detection in infants using scalp EEG. These results pave the way to study task-related changes in HFB during infancy. Check out the preprint!
dynamic brain lab 