Fig. 5: Overview of the estimation of λ dynamics done on every brain region of each patient.
From: Cortex-wide topography of 1/f-exponent in Parkinson’s disease
a Time series of MEG from a source located in the pre-motor cortex left hemisphere of a PD patient. b Zoom in one epoch (duration 50 sec) of the time series of (a). c The black line shows the PSD of the time series of (b). The grey line is the full fit provided by FOOOF package. The dotted line shows the aperiodic activity following a power law \(\frac{\kappa }{{f}^{\lambda }}\). d Right: Pseudocolor image of the PSD as a function of time. The red line shows the corresponding λ for each epoch. Left: Temporal probability density of λ.
