input_fname : str
Path to the data file (extension .bin ). The header file with the
same file name stem and an extension .txt is expected to be found
in the same directory.
preload : bool or str (default False)
Preload data into memory for data manipulation and faster indexing.
If True, the data will be preloaded into memory (fast, requires
large amount of memory). If preload is a string, preload is the
file name of a memory-mapped file which is used to store the data
on the hard drive (slower, requires less memory).
verbose : bool, str, int, or None
If not None, override default verbose level (see mne.verbose).
pos_fname : str or None (default None)
If not None, load digitized head points from this file
add_head_trans : bool (default True)
If True attempt to perform initial head localization. Compute initial
device to head coordinate transform using HPI coils. If no
HPI coils are in info[‘dig’] hpi coils are assumed to be in canonical
order of fiducial points (nas, rpa, lpa).
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