读取 XDF 脑电数据#

这里读取一段示例 XDF 数据。虽然本示例不做进一步分析，但该记录来自一次短时平行听觉反应（pABR）实验 [1]，由 Maddox Lab 提供。

# Authors: Clemens Brunner <clemens.brunner@gmail.com>
#          Eric Larson <larson.eric.d@gmail.com>
#
# License: BSD-3-Clause
# Copyright the MNE-Python contributors.

import pyxdf

import mne
from mne.datasets import misc

fname = misc.data_path() / "xdf" / "sub-P001_ses-S004_task-Default_run-001_eeg_a2.xdf"
streams, header = pyxdf.load_xdf(fname)
data = streams[0]["time_series"].T
assert data.shape[0] == 5  # four raw EEG plus one stim channel
data[:4:2] -= data[1:4:2]  # subtract (rereference) to get two bipolar EEG
data = data[::2]  # subselect
data[:2] *= 1e-6 / 50 / 2  # uV -> V and preamp gain
sfreq = float(streams[0]["info"]["nominal_srate"][0])
info = mne.create_info(3, sfreq, ["eeg", "eeg", "stim"])
raw = mne.io.RawArray(data, info)
raw.plot(scalings=dict(eeg=100e-6), duration=1, start=14)

Creating RawArray with float64 data, n_channels=3, n_times=2320128
    Range : 0 ... 2320127 =      0.000 ...   232.013 secs
Ready.

参考文献#

脚本总运行时间：（0 分 2.472 秒）

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