Generates an HRF object using Fourier basis functions (sine and cosine pairs)
with custom parameters.
Usage
hrf_fourier_generator(nbasis = 5, span = 24)
Arguments
- nbasis
Number of basis functions (default: 5). Should be even for complete sine-cosine pairs.
- span
Temporal window in seconds (default: 24)
Value
An HRF object of class c("Fourier_HRF", "HRF", "function")
Details
The Fourier basis uses alternating sine and cosine functions with increasing
frequencies. This provides a smooth, periodic basis set that can capture
oscillatory components in the HRF.
See also
HRF_objects for pre-defined HRF objects,
getHRF for a unified interface to create HRFs
Examples
# Create Fourier basis with 8 functions
custom_fourier <- hrf_fourier_generator(nbasis = 8)
t <- seq(0, 24, by = 0.1)
response <- evaluate(custom_fourier, t)
matplot(t, response, type = "l", main = "Fourier HRF with 8 basis functions")
