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Power-Law Scaling in the Brain Surface Electric Potential
2009
PLoS Computational Biology
Recent studies have identified broadband phenomena in the electric potentials produced by the brain. We report the finding of power-law scaling in these signals using subdural electrocorticographic recordings from the surface of human cortex. The power spectral density (PSD) of the electric potential has the power-law form P(f )*Af {x from 80 to 500 Hz. This scaling index, x~4:0+0:1, is conserved across subjects, area in the cortex, and local neural activity levels. The shape of the PSD does
doi:10.1371/journal.pcbi.1000609
pmid:20019800
pmcid:PMC2787015
fatcat:d5zowwx7zfhr7mlei24aed2cxu