非官方中文翻译 本页译自 MNE-Python 官方文档： 查看英文原文 ↗。 文档版权归 MNE Developers 所有（BSD-3-Clause）。

说明

转到末尾下载完整示例代码。

在 MNE-Python 中绘制眼动热图#

本教程介绍如何把眼动位置数据绘制为热图。

另请参阅

从眼动设备导入数据；在 MNE-Python 中处理眼动数据

# Authors: The MNE-Python contributors.
# License: BSD-3-Clause
# Copyright the MNE-Python contributors.

数据加载#

照例先导入所需模块并加载示例数据：由 SR Research 的 '.asc' 文件格式记录的眼动数据。

import matplotlib.pyplot as plt

import mne
from mne.viz.eyetracking import plot_gaze

task_fpath = mne.datasets.eyelink.data_path() / "freeviewing"
et_fpath = task_fpath / "sub-01_task-freeview_eyetrack.asc"
stim_fpath = task_fpath / "stim" / "naturalistic.png"

raw = mne.io.read_raw_eyelink(et_fpath)
calibration = mne.preprocessing.eyetracking.read_eyelink_calibration(
    et_fpath,
    screen_resolution=(1920, 1080),
    screen_size=(0.53, 0.3),
    screen_distance=0.9,
)[0]

Loading /home/circleci/mne_data/MNE-eyelink-data/freeviewing/sub-01_task-freeview_eyetrack.asc
Pixel coordinate data detected. Pass `scalings=dict(eyegaze=1e3)` when using plot method to make traces more legible.
Pupil-size area detected.
Found 158 button event(s) in this file.
Found 152 button event(s) in this file.
Found 110 button event(s) in this file.
Found 158 button event(s) in this file.
Found 200 button event(s) in this file.
Found 197 button event(s) in this file.
Found 4 button event(s) in this file.
Found 156 button event(s) in this file.
Found 156 button event(s) in this file.
Found 196 button event(s) in this file.
There are 10 recording blocks in this file. Times between blocks will be annotated with BAD_ACQ_SKIP.
Found 744 button press events.
Reading calibration data from /home/circleci/mne_data/MNE-eyelink-data/freeviewing/sub-01_task-freeview_eyetrack.asc

处理数据并分段#

首先对眨眼期间的缺失数据做插值，然后对数据分段。

mne.preprocessing.eyetracking.interpolate_blinks(raw, interpolate_gaze=True)
raw.annotations.rename({"dvns": "natural"})  # more intuitive

epochs = mne.Epochs(raw, event_id=["natural"], tmin=0, tmax=20, baseline=None)

Interpolating missing data during blinks...
Interpolated 3 channels: ['xpos_left', 'ypos_left', 'pupil_left']
Removing 'BAD_' from BAD_blink.
Used Annotations descriptions: ['-1 SYNC FRAME No.114', '-1 SYNC FRAME No.139', '-1 SYNC FRAME No.14', '-1 SYNC FRAME No.194', '-1 SYNC FRAME No.339', '-1 SYNC FRAME No.349', '-1 SYNC FRAME No.39', '-1 SYNC FRAME No.429', '-1 SYNC FRAME No.499', '-1 SYNC FRAME No.504', '-10 CALIB_ANIMATION_ONSET', '-10 SYNC FRAME No.103', '-10 SYNC FRAME No.108', '-10 SYNC FRAME No.113', '-10 SYNC FRAME No.118', '-10 SYNC FRAME No.123', '-10 SYNC FRAME No.128', '-10 SYNC FRAME No.13', '-10 SYNC FRAME No.133', '-10 SYNC FRAME No.138', '-10 SYNC FRAME No.143', '-10 SYNC FRAME No.148', '-10 SYNC FRAME No.153', '-10 SYNC FRAME No.158', '-10 SYNC FRAME No.163', '-10 SYNC FRAME No.168', '-10 SYNC FRAME No.173', '-10 SYNC FRAME No.178', '-10 SYNC FRAME No.18', '-10 SYNC FRAME No.183', '-10 SYNC FRAME No.188', '-10 SYNC FRAME No.193', '-10 SYNC FRAME No.198', '-10 SYNC FRAME No.203', '-10 SYNC FRAME No.208', '-10 SYNC FRAME No.213', '-10 SYNC FRAME No.218', '-10 SYNC FRAME No.223', '-10 SYNC FRAME No.228', '-10 SYNC FRAME No.23', '-10 SYNC FRAME No.233', '-10 SYNC FRAME No.238', '-10 SYNC FRAME No.243', '-10 SYNC FRAME No.248', '-10 SYNC FRAME No.253', '-10 SYNC FRAME No.258', '-10 SYNC FRAME No.263', '-10 SYNC FRAME No.268', '-10 SYNC FRAME No.273', '-10 SYNC FRAME No.278', '-10 SYNC FRAME No.28', '-10 SYNC FRAME No.283', '-10 SYNC FRAME No.288', '-10 SYNC FRAME No.293', '-10 SYNC FRAME No.298', '-10 SYNC FRAME No.303', '-10 SYNC FRAME No.308', '-10 SYNC FRAME No.313', '-10 SYNC FRAME No.318', '-10 SYNC FRAME No.323', '-10 SYNC FRAME No.328', '-10 SYNC FRAME No.33', '-10 SYNC FRAME No.333', '-10 SYNC FRAME No.338', '-10 SYNC FRAME No.343', '-10 SYNC FRAME No.348', '-10 SYNC FRAME No.353', '-10 SYNC FRAME No.358', '-10 SYNC FRAME No.363', '-10 SYNC FRAME No.368', '-10 SYNC FRAME No.373', '-10 SYNC FRAME No.378', '-10 SYNC FRAME No.38', '-10 SYNC FRAME No.383', '-10 SYNC FRAME No.388', '-10 SYNC FRAME No.393', '-10 SYNC FRAME No.398', '-10 SYNC FRAME No.403', '-10 SYNC FRAME No.408', '-10 SYNC FRAME No.413', '-10 SYNC FRAME No.418', '-10 SYNC FRAME No.423', '-10 SYNC FRAME No.428', '-10 SYNC FRAME No.43', '-10 SYNC FRAME No.433', '-10 SYNC FRAME No.438', '-10 SYNC FRAME No.443', '-10 SYNC FRAME No.448', '-10 SYNC FRAME No.453', '-10 SYNC FRAME No.458', '-10 SYNC FRAME No.463', '-10 SYNC FRAME No.468', '-10 SYNC FRAME No.473', '-10 SYNC FRAME No.478', '-10 SYNC FRAME No.48', '-10 SYNC FRAME No.483', '-10 SYNC FRAME No.488', '-10 SYNC FRAME No.493', '-10 SYNC FRAME No.498', '-10 SYNC FRAME No.503', '-10 SYNC FRAME No.508', '-10 SYNC FRAME No.513', '-10 SYNC FRAME No.518', '-10 SYNC FRAME No.523', '-10 SYNC FRAME No.53', '-10 SYNC FRAME No.58', '-10 SYNC FRAME No.63', '-10 SYNC FRAME No.68', '-10 SYNC FRAME No.73', '-10 SYNC FRAME No.78', '-10 SYNC FRAME No.8', '-10 SYNC FRAME No.83', '-10 SYNC FRAME No.88', '-10 SYNC FRAME No.93', '-10 SYNC FRAME No.98', '-11 SYNC FRAME No.10', '-11 SYNC FRAME No.100', '-11 SYNC FRAME No.103', '-11 SYNC FRAME No.105', '-11 SYNC FRAME No.108', '-11 SYNC FRAME No.113', '-11 SYNC FRAME No.118', '-11 SYNC FRAME No.120', '-11 SYNC FRAME No.123', '-11 SYNC FRAME No.125', '-11 SYNC FRAME No.128', '-11 SYNC FRAME No.13', '-11 SYNC FRAME No.133', '-11 SYNC FRAME No.138', '-11 SYNC FRAME No.143', '-11 SYNC FRAME No.148', '-11 SYNC FRAME No.153', '-11 SYNC FRAME No.158', '-11 SYNC FRAME No.160', '-11 SYNC FRAME No.163', '-11 SYNC FRAME No.168', '-11 SYNC FRAME No.170', '-11 SYNC FRAME No.173', '-11 SYNC FRAME No.178', '-11 SYNC FRAME No.18', '-11 SYNC FRAME No.180', '-11 SYNC FRAME No.183', '-11 SYNC FRAME No.185', '-11 SYNC FRAME No.188', '-11 SYNC FRAME No.193', '-11 SYNC FRAME No.195', '-11 SYNC FRAME No.198', '-11 SYNC FRAME No.200', '-11 SYNC FRAME No.203', '-11 SYNC FRAME No.208', '-11 SYNC FRAME No.213', '-11 SYNC FRAME No.218', '-11 SYNC FRAME No.223', '-11 SYNC FRAME No.225', '-11 SYNC FRAME No.228', '-11 SYNC FRAME No.23', '-11 SYNC FRAME No.230', '-11 SYNC FRAME No.233', '-11 SYNC FRAME No.238', '-11 SYNC FRAME No.243', '-11 SYNC FRAME No.248', '-11 SYNC FRAME No.250', '-11 SYNC FRAME No.253', '-11 SYNC FRAME No.258', '-11 SYNC FRAME No.263', '-11 SYNC FRAME No.265', '-11 SYNC FRAME No.268', '-11 SYNC FRAME No.273', '-11 SYNC FRAME No.275', '-11 SYNC FRAME No.278', '-11 SYNC FRAME No.28', '-11 SYNC FRAME No.280', '-11 SYNC FRAME No.283', '-11 SYNC FRAME No.288', '-11 SYNC FRAME No.293', '-11 SYNC FRAME No.298', '-11 SYNC FRAME No.3', '-11 SYNC FRAME No.30', '-11 SYNC FRAME No.303', '-11 SYNC FRAME No.305', '-11 SYNC FRAME No.308', '-11 SYNC FRAME No.310', '-11 SYNC FRAME No.313', '-11 SYNC FRAME No.318', '-11 SYNC FRAME No.323', '-11 SYNC FRAME No.328', '-11 SYNC FRAME No.33', '-11 SYNC FRAME No.330', '-11 SYNC FRAME No.333', '-11 SYNC FRAME No.338', '-11 SYNC FRAME No.343', '-11 SYNC FRAME No.345', '-11 SYNC FRAME No.348', '-11 SYNC FRAME No.353', '-11 SYNC FRAME No.358', '-11 SYNC FRAME No.363', '-11 SYNC FRAME No.368', '-11 SYNC FRAME No.373', '-11 SYNC FRAME No.378', '-11 SYNC FRAME No.38', '-11 SYNC FRAME No.380', '-11 SYNC FRAME No.383', '-11 SYNC FRAME No.385', '-11 SYNC FRAME No.388', '-11 SYNC FRAME No.393', '-11 SYNC FRAME No.395', '-11 SYNC FRAME No.398', '-11 SYNC FRAME No.40', '-11 SYNC FRAME No.400', '-11 SYNC FRAME No.403', '-11 SYNC FRAME No.405', '-11 SYNC FRAME No.408', '-11 SYNC FRAME No.413', '-11 SYNC FRAME No.418', '-11 SYNC FRAME No.420', '-11 SYNC FRAME No.423', '-11 SYNC FRAME No.425', '-11 SYNC FRAME No.428', '-11 SYNC FRAME No.43', '-11 SYNC FRAME No.430', '-11 SYNC FRAME No.433', '-11 SYNC FRAME No.438', '-11 SYNC FRAME No.443', '-11 SYNC FRAME No.445', '-11 SYNC FRAME No.448', '-11 SYNC FRAME No.45', '-11 SYNC FRAME No.450', '-11 SYNC FRAME No.453', '-11 SYNC FRAME No.458', '-11 SYNC FRAME No.460', '-11 SYNC FRAME No.463', '-11 SYNC FRAME No.468', '-11 SYNC FRAME No.470', '-11 SYNC FRAME No.473', '-11 SYNC FRAME No.475', '-11 SYNC FRAME No.478', '-11 SYNC FRAME No.48', '-11 SYNC FRAME No.483', '-11 SYNC FRAME No.488', '-11 SYNC FRAME 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'-12 SYNC FRAME No.230', '-12 SYNC FRAME No.235', '-12 SYNC FRAME No.240', '-12 SYNC FRAME No.245', '-12 SYNC FRAME No.25', '-12 SYNC FRAME No.250', '-12 SYNC FRAME No.255', '-12 SYNC FRAME No.260', '-12 SYNC FRAME No.265', '-12 SYNC FRAME No.270', '-12 SYNC FRAME No.275', '-12 SYNC FRAME No.295', '-12 SYNC FRAME No.3', '-12 SYNC FRAME No.30', '-12 SYNC FRAME No.305', '-12 SYNC FRAME No.310', '-12 SYNC FRAME No.320', '-12 SYNC FRAME No.325', '-12 SYNC FRAME No.330', '-12 SYNC FRAME No.335', '-12 SYNC FRAME No.340', '-12 SYNC FRAME No.345', '-12 SYNC FRAME No.35', '-12 SYNC FRAME No.350', '-12 SYNC FRAME No.355', '-12 SYNC FRAME No.365', '-12 SYNC FRAME No.375', '-12 SYNC FRAME No.385', '-12 SYNC FRAME No.390', '-12 SYNC FRAME No.395', '-12 SYNC FRAME No.40', '-12 SYNC FRAME No.400', '-12 SYNC FRAME No.410', '-12 SYNC FRAME No.415', '-12 SYNC FRAME No.420', '-12 SYNC FRAME No.425', '-12 SYNC FRAME No.430', '-12 SYNC FRAME No.435', '-12 SYNC FRAME No.440', '-12 SYNC FRAME No.445', '-12 SYNC FRAME No.45', '-12 SYNC FRAME No.450', '-12 SYNC FRAME No.455', '-12 SYNC FRAME No.465', '-12 SYNC FRAME No.470', '-12 SYNC FRAME No.485', '-12 SYNC FRAME No.490', '-12 SYNC FRAME No.495', '-12 SYNC FRAME No.500', '-12 SYNC FRAME No.505', '-12 SYNC FRAME No.510', '-12 SYNC FRAME No.520', '-12 SYNC FRAME No.55', '-12 SYNC FRAME No.60', '-12 SYNC FRAME No.65', '-12 SYNC FRAME No.70', '-12 SYNC FRAME No.75', '-12 SYNC FRAME No.80', '-12 SYNC FRAME No.85', '-12 SYNC FRAME No.90', '-12 SYNC FRAME No.95', '-13 CALIB_ANIMATION_ONSET', '-13 SYNC FRAME No.1', '-13 SYNC FRAME No.105', '-13 SYNC FRAME No.110', '-13 SYNC FRAME No.115', '-13 SYNC FRAME No.120', '-13 SYNC FRAME No.125', '-13 SYNC FRAME No.130', '-13 SYNC FRAME No.135', '-13 SYNC FRAME No.140', '-13 SYNC FRAME No.145', '-13 SYNC FRAME No.15', '-13 SYNC FRAME No.150', '-13 SYNC FRAME No.155', '-13 SYNC FRAME No.160', '-13 SYNC FRAME No.165', '-13 SYNC FRAME No.170', '-13 SYNC FRAME No.175', '-13 SYNC FRAME No.180', '-13 SYNC FRAME No.185', '-13 SYNC FRAME No.190', '-13 SYNC FRAME No.195', '-13 SYNC FRAME No.20', '-13 SYNC FRAME No.200', '-13 SYNC FRAME No.205', '-13 SYNC FRAME No.210', '-13 SYNC FRAME No.215', '-13 SYNC FRAME No.220', '-13 SYNC FRAME No.225', '-13 SYNC FRAME No.230', '-13 SYNC FRAME No.235', '-13 SYNC FRAME No.240', '-13 SYNC FRAME No.245', '-13 SYNC FRAME No.25', '-13 SYNC FRAME No.250', '-13 SYNC FRAME No.255', '-13 SYNC FRAME No.260', '-13 SYNC FRAME No.265', '-13 SYNC FRAME No.270', '-13 SYNC FRAME No.275', '-13 SYNC FRAME No.280', '-13 SYNC FRAME No.285', '-13 SYNC FRAME No.290', '-13 SYNC FRAME No.295', '-13 SYNC FRAME No.30', '-13 SYNC FRAME No.300', '-13 SYNC FRAME No.305', '-13 SYNC FRAME No.310', '-13 SYNC FRAME No.315', '-13 SYNC FRAME No.320', '-13 SYNC FRAME No.325', '-13 SYNC FRAME No.330', '-13 SYNC FRAME No.335', '-13 SYNC FRAME No.340', '-13 SYNC FRAME No.345', '-13 SYNC FRAME No.35', '-13 SYNC FRAME No.350', '-13 SYNC FRAME No.355', '-13 SYNC FRAME No.360', '-13 SYNC FRAME No.365', '-13 SYNC FRAME No.370', '-13 SYNC FRAME No.375', '-13 SYNC FRAME No.380', '-13 SYNC FRAME No.385', '-13 SYNC FRAME No.390', '-13 SYNC FRAME No.395', '-13 SYNC FRAME No.40', '-13 SYNC FRAME No.400', '-13 SYNC FRAME No.405', '-13 SYNC FRAME No.410', '-13 SYNC FRAME No.415', '-13 SYNC FRAME No.420', '-13 SYNC FRAME No.425', '-13 SYNC FRAME No.430', '-13 SYNC FRAME No.435', '-13 SYNC FRAME No.440', '-13 SYNC FRAME No.445', '-13 SYNC FRAME No.45', '-13 SYNC FRAME No.450', '-13 SYNC FRAME No.455', '-13 SYNC FRAME No.460', '-13 SYNC FRAME No.465', '-13 SYNC FRAME No.470', '-13 SYNC FRAME No.475', '-13 SYNC FRAME No.480', '-13 SYNC FRAME No.485', '-13 SYNC FRAME No.490', '-13 SYNC FRAME No.495', '-13 SYNC FRAME No.50', '-13 SYNC FRAME No.500', '-13 SYNC FRAME No.505', '-13 SYNC FRAME No.510', '-13 SYNC FRAME No.515', '-13 SYNC FRAME No.520', '-13 SYNC FRAME No.55', '-13 SYNC FRAME No.60', '-13 SYNC FRAME No.65', '-13 SYNC FRAME No.70', '-13 SYNC FRAME No.75', '-13 SYNC FRAME No.80', '-13 SYNC FRAME No.85', '-13 SYNC FRAME No.90', '-13 SYNC FRAME No.95', '-14 SYNC FRAME No.10', '-14 SYNC FRAME No.100', '-14 SYNC FRAME No.105', '-14 SYNC FRAME No.110', '-14 SYNC FRAME No.115', '-14 SYNC FRAME No.120', '-14 SYNC FRAME No.125', '-14 SYNC FRAME No.130', '-14 SYNC FRAME No.135', '-14 SYNC FRAME No.140', '-14 SYNC FRAME No.145', '-14 SYNC FRAME No.15', '-14 SYNC FRAME No.150', '-14 SYNC FRAME No.155', '-14 SYNC FRAME No.160', '-14 SYNC FRAME No.165', '-14 SYNC FRAME No.170', '-14 SYNC FRAME No.175', '-14 SYNC FRAME No.180', '-14 SYNC FRAME No.185', '-14 SYNC FRAME No.190', '-14 SYNC FRAME No.195', '-14 SYNC FRAME No.20', '-14 SYNC FRAME No.200', '-14 SYNC FRAME No.205', '-14 SYNC FRAME No.210', '-14 SYNC FRAME No.212', '-14 SYNC FRAME No.215', '-14 SYNC FRAME No.220', '-14 SYNC FRAME No.225', '-14 SYNC FRAME No.230', '-14 SYNC FRAME No.232', '-14 SYNC FRAME No.235', '-14 SYNC FRAME No.240', '-14 SYNC FRAME No.245', '-14 SYNC FRAME No.247', '-14 SYNC FRAME No.25', '-14 SYNC FRAME No.250', '-14 SYNC FRAME No.252', '-14 SYNC FRAME No.255', '-14 SYNC FRAME No.260', '-14 SYNC FRAME No.265', '-14 SYNC FRAME No.270', '-14 SYNC FRAME No.272', '-14 SYNC FRAME No.275', '-14 SYNC FRAME No.280', '-14 SYNC FRAME No.282', '-14 SYNC FRAME No.285', '-14 SYNC FRAME No.290', '-14 SYNC FRAME No.295', '-14 SYNC FRAME No.3', '-14 SYNC FRAME No.30', '-14 SYNC FRAME No.300', '-14 SYNC FRAME No.302', '-14 SYNC FRAME No.305', '-14 SYNC FRAME No.307', '-14 SYNC FRAME No.310', '-14 SYNC FRAME No.315', '-14 SYNC FRAME No.317', '-14 SYNC FRAME No.320', '-14 SYNC FRAME No.322', '-14 SYNC FRAME No.325', '-14 SYNC FRAME No.330', '-14 SYNC FRAME No.335', '-14 SYNC FRAME No.340', '-14 SYNC FRAME No.345', '-14 SYNC FRAME No.347', '-14 SYNC FRAME No.35', '-14 SYNC FRAME No.350', '-14 SYNC FRAME No.355', '-14 SYNC FRAME No.360', '-14 SYNC FRAME No.365', '-14 SYNC FRAME No.370', '-14 SYNC FRAME No.375', '-14 SYNC FRAME No.377', '-14 SYNC FRAME No.380', '-14 SYNC FRAME No.382', '-14 SYNC FRAME No.385', '-14 SYNC FRAME No.390', '-14 SYNC FRAME No.395', '-14 SYNC FRAME No.397', '-14 SYNC FRAME No.40', '-14 SYNC FRAME No.400', '-14 SYNC FRAME No.402', '-14 SYNC FRAME No.405', '-14 SYNC FRAME No.410', '-14 SYNC FRAME No.412', '-14 SYNC FRAME No.415', '-14 SYNC FRAME No.420', '-14 SYNC FRAME No.425', '-14 SYNC FRAME No.427', '-14 SYNC FRAME No.430', '-14 SYNC FRAME No.435', '-14 SYNC FRAME No.437', '-14 SYNC FRAME No.440', '-14 SYNC FRAME No.442', '-14 SYNC FRAME No.445', '-14 SYNC FRAME No.45', '-14 SYNC FRAME No.450', '-14 SYNC FRAME No.455', '-14 SYNC FRAME No.457', '-14 SYNC FRAME No.460', '-14 SYNC FRAME No.462', '-14 SYNC FRAME No.465', '-14 SYNC FRAME No.470', '-14 SYNC FRAME No.475', '-14 SYNC FRAME No.477', '-14 SYNC FRAME No.480', '-14 SYNC FRAME No.482', '-14 SYNC FRAME No.485', '-14 SYNC FRAME No.487', '-14 SYNC FRAME No.490', '-14 SYNC FRAME No.495', '-14 SYNC FRAME No.497', '-14 SYNC FRAME No.50', '-14 SYNC FRAME No.500', '-14 SYNC FRAME No.505', '-14 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No.91', '-7 SYNC FRAME No.96', '-8 SYNC FRAME No.101', '-8 SYNC FRAME No.103', '-8 SYNC FRAME No.106', '-8 SYNC FRAME No.108', '-8 SYNC FRAME No.11', '-8 SYNC FRAME No.111', '-8 SYNC FRAME No.113', '-8 SYNC FRAME No.116', '-8 SYNC FRAME No.118', '-8 SYNC FRAME No.121', '-8 SYNC FRAME No.126', '-8 SYNC FRAME No.128', '-8 SYNC FRAME No.13', '-8 SYNC FRAME No.131', '-8 SYNC FRAME No.136', '-8 SYNC FRAME No.141', '-8 SYNC FRAME No.146', '-8 SYNC FRAME No.151', '-8 SYNC FRAME No.153', '-8 SYNC FRAME No.158', '-8 SYNC FRAME No.16', '-8 SYNC FRAME No.161', '-8 SYNC FRAME No.166', '-8 SYNC FRAME No.168', '-8 SYNC FRAME No.171', '-8 SYNC FRAME No.173', '-8 SYNC FRAME No.176', '-8 SYNC FRAME No.178', '-8 SYNC FRAME No.18', '-8 SYNC FRAME No.181', '-8 SYNC FRAME No.183', '-8 SYNC FRAME No.188', '-8 SYNC FRAME No.191', '-8 SYNC FRAME No.193', '-8 SYNC FRAME No.196', '-8 SYNC FRAME No.198', '-8 SYNC FRAME No.2', '-8 SYNC FRAME No.201', '-8 SYNC FRAME No.206', '-8 SYNC FRAME No.208', '-8 SYNC FRAME No.21', '-8 SYNC FRAME No.211', '-8 SYNC FRAME No.216', '-8 SYNC FRAME No.218', '-8 SYNC FRAME No.221', '-8 SYNC FRAME No.223', '-8 SYNC FRAME No.226', '-8 SYNC FRAME No.23', '-8 SYNC FRAME No.236', '-8 SYNC FRAME No.238', '-8 SYNC FRAME No.241', '-8 SYNC FRAME No.246', '-8 SYNC FRAME No.251', '-8 SYNC FRAME No.253', '-8 SYNC FRAME No.256', '-8 SYNC FRAME No.258', '-8 SYNC FRAME No.26', '-8 SYNC FRAME No.263', '-8 SYNC FRAME No.268', '-8 SYNC FRAME No.283', '-8 SYNC FRAME No.286', '-8 SYNC FRAME No.288', '-8 SYNC FRAME No.291', '-8 SYNC FRAME No.293', '-8 SYNC FRAME No.296', '-8 SYNC FRAME No.3', '-8 SYNC FRAME No.308', '-8 SYNC FRAME No.31', '-8 SYNC FRAME No.313', '-8 SYNC FRAME No.318', '-8 SYNC FRAME No.326', '-8 SYNC FRAME No.328', '-8 SYNC FRAME No.333', '-8 SYNC FRAME No.343', '-8 SYNC FRAME No.348', '-8 SYNC FRAME No.36', '-8 SYNC FRAME No.366', '-8 SYNC FRAME No.368', '-8 SYNC FRAME No.373', '-8 SYNC FRAME No.378', '-8 SYNC FRAME No.38', '-8 SYNC FRAME No.4', '-8 SYNC FRAME No.403', '-8 SYNC FRAME No.408', '-8 SYNC FRAME No.41', '-8 SYNC FRAME No.418', '-8 SYNC FRAME No.423', '-8 SYNC FRAME No.428', '-8 SYNC FRAME No.43', '-8 SYNC FRAME No.433', '-8 SYNC FRAME No.438', '-8 SYNC FRAME No.443', '-8 SYNC FRAME No.453', '-8 SYNC FRAME No.46', '-8 SYNC FRAME No.468', '-8 SYNC FRAME No.473', '-8 SYNC FRAME No.478', '-8 SYNC FRAME No.48', '-8 SYNC FRAME No.493', '-8 SYNC FRAME No.5', '-8 SYNC FRAME No.503', '-8 SYNC FRAME No.508', '-8 SYNC FRAME No.51', '-8 SYNC FRAME No.513', '-8 SYNC FRAME No.518', '-8 SYNC FRAME No.53', '-8 SYNC FRAME No.56', '-8 SYNC FRAME No.58', '-8 SYNC FRAME No.6', '-8 SYNC FRAME No.61', '-8 SYNC FRAME No.63', '-8 SYNC FRAME No.66', '-8 SYNC FRAME No.71', '-8 SYNC FRAME No.73', '-8 SYNC FRAME No.76', '-8 SYNC FRAME No.78', '-8 SYNC FRAME No.81', '-8 SYNC FRAME No.83', '-8 SYNC FRAME No.86', '-8 SYNC FRAME No.88', '-8 SYNC FRAME No.91', '-8 SYNC FRAME No.93', '-8 SYNC FRAME No.96', '-9 CALIB_ANIMATION_ONSET', '-9 SYNC FRAME No.103', '-9 SYNC FRAME No.108', '-9 SYNC FRAME No.118', '-9 SYNC FRAME No.13', '-9 SYNC FRAME No.133', '-9 SYNC FRAME No.138', '-9 SYNC FRAME No.148', '-9 SYNC FRAME No.153', '-9 SYNC FRAME No.158', '-9 SYNC FRAME No.163', '-9 SYNC FRAME No.168', '-9 SYNC FRAME No.173', '-9 SYNC FRAME No.178', '-9 SYNC FRAME No.183', '-9 SYNC FRAME No.193', '-9 SYNC FRAME No.198', '-9 SYNC FRAME No.2', '-9 SYNC FRAME No.208', '-9 SYNC FRAME No.213', '-9 SYNC FRAME No.23', '-9 SYNC FRAME No.233', '-9 SYNC FRAME No.238', '-9 SYNC FRAME No.243', '-9 SYNC FRAME No.248', '-9 SYNC FRAME No.253', '-9 SYNC FRAME No.258', '-9 SYNC FRAME No.268', '-9 SYNC FRAME No.273', '-9 SYNC FRAME No.28', '-9 SYNC FRAME No.283', '-9 SYNC FRAME No.288', '-9 SYNC FRAME No.298', '-9 SYNC FRAME No.303', '-9 SYNC FRAME No.318', '-9 SYNC FRAME No.323', '-9 SYNC FRAME No.328', '-9 SYNC FRAME No.33', '-9 SYNC FRAME No.338', '-9 SYNC FRAME No.343', '-9 SYNC FRAME No.358', '-9 SYNC FRAME No.363', '-9 SYNC FRAME No.368', '-9 SYNC FRAME No.378', '-9 SYNC FRAME No.38', '-9 SYNC FRAME No.388', '-9 SYNC FRAME No.393', '-9 SYNC FRAME No.398', '-9 SYNC FRAME No.4', '-9 SYNC FRAME No.408', '-9 SYNC FRAME No.428', '-9 SYNC FRAME No.43', '-9 SYNC FRAME No.438', '-9 SYNC FRAME No.453', '-9 SYNC FRAME No.468', '-9 SYNC FRAME No.478', '-9 SYNC FRAME No.483', '-9 SYNC FRAME No.488', '-9 SYNC FRAME No.498', '-9 SYNC FRAME No.5', '-9 SYNC FRAME No.503', '-9 SYNC FRAME No.523', '-9 SYNC FRAME No.68', '-9 SYNC FRAME No.73', '-9 SYNC FRAME No.8', '-9 SYNC FRAME No.83', '-9 SYNC FRAME No.88', '-9 SYNC FRAME No.93', '0 GAZE_TO_CALIB', 'TRACKER_TIME 2 934630.350', 'TRACKER_TIME 3 994633.368', 'TRACKER_TIME 4 1054655.986', 'blink', 'button_2_press', 'button_2_release', 'button_3_press', 'button_3_release', 'button_4_press', 'button_4_release', 'dvss', 'fixation', 'natural', 'saccade']
Ignoring annotation durations and creating fixed-duration epochs around annotation onsets.
Not setting metadata
5 matching events found
No baseline correction applied
0 projection items activated

绘制眼动数据热图#

要绘制眼动数据热图，可使用 plot_gaze() 函数。需要定义画布尺寸；对该文件而言，眼位数据以像素为单位，因此用被试屏幕分辨率（1920x1080）作为宽高。也可以用 sigma 参数平滑图形。

cmap = plt.get_cmap("viridis")
plot_gaze(epochs["natural"], calibration=calibration, cmap=cmap, sigma=50)
Gaze heatmap
Using data from preloaded Raw for 5 events and 10001 original time points ...
0 bad epochs dropped

说明

对许多眼动仪而言，像素坐标 (0, 0) 位于屏幕可追踪区域的左上角。

把图叠加到图像上#

可以用 matplotlib 把注视热图叠加到刺激图像上。我们会自定义色图，使热图中的某些数值完全透明；然后用 vlim 参数强制热图从大于上一幅热图最暗值的数值开始，从而使最暗的颜色透明。

cmap = cmap.with_extremes(
    under=(0.0, 0.0, 0.0, 0.0)
)  # make the lowest values transparent
_, ax = plt.subplots(figsize=(6, 3.5), layout="constrained")
ax.imshow(plt.imread(stim_fpath))
plot_gaze(
    epochs["natural"],
    calibration=calibration,
    vlim=(0.0003, None),
    sigma=50,
    cmap=cmap,
    axes=ax,
)
Gaze heatmap
Using data from preloaded Raw for 5 events and 10001 original time points ...
0 bad epochs dropped

以视角为单位显示热图#

在科学论文中，常把注视数据表示为被试眼睛到屏幕的视角。可以在绘制热图前把注视数据的单位转换为视角弧度：

epochs.load_data()
mne.preprocessing.eyetracking.convert_units(epochs, calibration, to="radians")
plot_gaze(
    epochs["natural"],
    calibration=calibration,
    sigma=50,
)
Gaze heatmap
Using data from preloaded Raw for 5 events and 10001 original time points ...
0 bad epochs dropped
Converted ['xpos_left', 'ypos_left'] to radians.

脚本总运行时间：（0 分 3.894 秒）

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