mne.io.read_raw_cnt#
- mne.io.read_raw_cnt(input_fname, eog=(), misc=(), ecg=(), emg=(), data_format='auto', date_format='mm/dd/yy', preload=False, verbose=None)[source]#
Read CNT data as raw object.
Note
2d spatial coordinates (x, y) for EEG channels are read from the file header and fit to a sphere to compute corresponding z-coordinates. If channels assigned as EEG channels have locations far away from the head (i.e. x and y coordinates don’t fit to a sphere), all the channel locations will be distorted (all channels that are not assigned with keywords
eog
,ecg
,emg
andmisc
are assigned as EEG channels). If you are not sure that the channel locations in the header are correct, it is probably safer to replace them withmne.io.Raw.set_montage()
. Montages can be created/imported with:Standard montages with
mne.channels.make_standard_montage()
Montages for Compumedics systems with
mne.channels.read_dig_dat()
Other reader functions are listed under See Also at
mne.channels.DigMontage
- Parameters:
- input_fnamepath-like
Path to the data file.
- eog
list
|tuple
|'auto'
|'header'
Names of channels or list of indices that should be designated EOG channels. If ‘header’, VEOG and HEOG channels assigned in the file header are used. If
'auto'
, channel names containing'EOG'
are used. Defaults to empty tuple.- misc
list
|tuple
Names of channels or list of indices that should be designated MISC channels. Defaults to empty tuple.
- ecg
list
|tuple
|'auto'
Names of channels or list of indices that should be designated ECG channels. If
'auto'
, the channel names containing'ECG'
are used. Defaults to empty tuple.- emg
list
|tuple
Names of channels or list of indices that should be designated EMG channels. If ‘auto’, the channel names containing ‘EMG’ are used. Defaults to empty tuple.
- data_format
'auto'
|'int16'
|'int32'
Defines the data format the data is read in. If
'auto'
, it is determined from the file header usingnumsamples
field. Defaults to'auto'
.- date_format
'mm/dd/yy'
|'dd/mm/yy'
Format of date in the header. Defaults to
'mm/dd/yy'
.- preload
bool
orstr
(defaultFalse
) 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
|None
Control verbosity of the logging output. If
None
, use the default verbosity level. See the logging documentation andmne.verbose()
for details. Should only be passed as a keyword argument.
- Returns:
- rawinstance of RawCNT.
The raw data. See
mne.io.Raw
for documentation of attributes and methods.
See also
mne.io.Raw
Documentation of attributes and methods of RawCNT.
Notes
New in version 0.12.
Examples using mne.io.read_raw_cnt
#
Importing data from EEG devices