Description Usage Arguments Value Author(s) Examples
Amplitude of Low Frequency Fluctuations (ALFF; Zang et al., 2007) and fractional Amplitude of Low Frequency Fluctuations (f/ALFF; Zou et al., 2008) are related measures that quantify the amplitude of low frequency oscillations (LFOs). This function outputs ALFF and fALFF for the input.
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x |
input vector for the time series of interest |
flo |
low frequency, typically 0.01 |
fhi |
high frequency, typically 0.1 |
tr |
the period associated with the vector x (inverse of frequency) |
detrend |
detrend the input time series |
takesqrt |
take the sqrt of the computed values |
kernel |
smoothing kernel in estimate, see |
vector is output showing ALFF and fALFF values
Avants BB
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