This function evaluates a hemodynamic response function (HRF) specified by an hrfspec object for a given set of time points (grid) and other parameters. It is a wrapper function that calls the evaluate.HRF function with the HRF function contained in the hrfspec object.
Usage
# S3 method for hrfspec
evaluate(x, grid, amplitude = 1, duration = 0, precision = 0.1, ...)Arguments
- x
The hrfspec object containing the HRF function.
- grid
A vector of time points.
- amplitude
The scaling value for the event (default: 1).
- duration
The duration of the event (default: 0).
- precision
The temporal resolution used for computing summed responses when duration > 0 (default: 0.1).
- ...
Additional arguments to be passed to the evaluate.HRF function.
Examples
hrf_spec <- hrfspec(hrf = HRF_SPMG1)
#> Error in hrfspec(hrf = HRF_SPMG1): could not find function "hrfspec"
hrf_values <- evaluate(hrfspec, grid=seq(0,20,by=1.5), duration=2, precision=.1)
#> Error in evaluate(hrfspec, grid = seq(0, 20, by = 1.5), duration = 2, precision = 0.1): object 'hrfspec' not found