Log Band Power

Processing chain in ROS-Neuro to determine when the logarithmic bandpower of the EEG signal crosses a given threshold.

Dataset

The GDF file provided was recorded using a 16-channel EEG amplifier (g.USBamp, g.Tec) at a sampling rate of 512 Hz, where the electrodes were positioned according to the 10-20 international system.

Resource

https://drive.google.com/file/d/1uBr5xO4rIT2c4uyMv3Wp68hWRpg_plb_/view?usp=sharing

Instructions

1. Source ROS workspace

source /opt/ros/noetic/setup.bash

2. Initialize a catkin workspace called catkin_ws

mkdir -p catkin_ws/src
cd catkin_ws/src/
catkin_init_workspace

3. Compile the catkin workspace from directory catkin_ws/ and source it

catkin build
# or
catkin_make

source ./devel/setup.bash

4. Copy logbandpower package in directory catkin_ws/src/

5. If it does not exist, create directory record in package directory catkin_ws/src/logbandpower/

6. Create directory dataset in package directory catkin_ws/src/logbandpower/

7. Rename the input GDF file as data.gdf and copy it in directory catkin_ws/src/logbandpower/dataset/

8. Compile the catkin workspace from directory catkin_ws/ and source it

catkin build
# or
catkin_make

source ./devel/setup.bash

9. Run launch file logbandpower.launch to start the analysis from directory catkin_ws/

source ./devel/setup.bash
roslaunch logbandpower logbandpower.launch

11. Once the analysis is completed, the ROS bag result.bag is saved in directory catkin_ws/src/logbandpower/record/

Note: the provided ROS bag result.bag was recorded in a local machine using the latest version of ROS Neuro.

Tested Environments

• Local machine, Ubuntu 20.04.6 LTS, Python 3.8.10, ROS Noetic, catkin workspace build with command catkin build
• Local machine, Ubuntu 20.04.6 LTS, Python 3.8.10, ROS Noetic, catkin workspace build with command catkin_make

VLAB Environment

Due to an older version of ROS Neuro installed in the VLAB virtual machine, a modification is required to make the package running correctly.

It is required to:

1. Move the input GDF file data.gdf in directory home/user/
2. Comment Option 1 (default) and decomment Option 2 in the launch file acquisition.launch

<!-- Option 2: VLAB virtual machine -->
<arg name="devarg" default="/home/user/data.gdf"/>

Authors

• Federico Pivotto, 2121720, federico.pivotto@studenti.unipd.it
• Alessandro Bozzon, 2122185, alessandro.bozzon@studenti.unipd.it
• Riccardo Simion, 2157564, riccardo.simion@studenti.unipd.it
• Riccardo Zerbinati, 2158676, riccardo.zerbinati@studenti.unipd.it

Contributions

Member	Workload	Work
Federico Pivotto	25%	Setup CMakeLists.txt, config package.xml, script bandpower.py
Alessandro Bozzon	25%	Config ChainCfg.yaml, script thresholding.py
Riccardo Simion	25%	Script record.py, code debugging
Riccardo Zerbinati	25%	Component launch files, launch file logbandpower.launch