The timescale and magnitude of 1/f aperiodic activity decrease with cortical depth in humans, macaques, and mice
Mila Halgren,Raphi Kang,Bradley Voytek,Istvan Ulbert,Daniel Fabo,Lorand Eross,Lucia Wittner,Joseph Madsen,Werner Doyle,Orrin Devinsky,Eric Halgren,Mark T Harnett,Sydney Cash · COSYNE 2022
Cortical dynamics obey a 1/f power law, exhibiting an exponential decay of spectral power with increasing frequency. The slope and offset of this 1/f decay reflect the timescale and magnitude of aperiodic neural activity, respectively. These properties are tightly linked to cellular and circuit mechanisms (e.g. excitation:inhibition balance and firing rates) as well as cognitive processes (e.g. perception, memory, and behavioral state). However, the physiology underlying the 1/f power law in cortical dynamics is not well understood. Here, we compared laminar recordings from human, macaque and
Thu, Mar 17, 2022