Calculate scalp coupling index.
This function calculates the scalp coupling index [1]. This is a measure of the quality of the connection between the optode and the scalp.
Raw
The raw data.
float
| None
For FIR filters, the lower pass-band edge; for IIR filters, the lower cutoff frequency. If None the data are only low-passed.
float
| None
For FIR filters, the upper pass-band edge; for IIR filters, the upper cutoff frequency. If None the data are only high-passed.
float
| str
Width of the transition band at the low cut-off frequency in Hz
(high pass or cutoff 1 in bandpass). Can be “auto”
(default) to use a multiple of l_freq
:
min(max(l_freq * 0.25, 2), l_freq)
Only used for method='fir'
.
float
| str
Width of the transition band at the high cut-off frequency in Hz
(low pass or cutoff 2 in bandpass). Can be “auto”
(default in 0.14) to use a multiple of h_freq
:
min(max(h_freq * 0.25, 2.), info['sfreq'] / 2. - h_freq)
Only used for method='fir'
.
str
| int
| None
Control verbosity of the logging output. If None
, use the default
verbosity level. See the logging documentation and
mne.verbose()
for details. Should only be passed as a keyword
argument.
References
mne.preprocessing.nirs.scalp_coupling_index
#Preprocessing functional near-infrared spectroscopy (fNIRS) data