EEG-fNIRS Dataset for Visual Imagery

Dataset DescriptionThis dataset contains EEG and fNIRS data from 23 participants. The task is visual imagery, where participants are asked to imagine three different images: a dog, a cup, and the letter "A". During the experiment, participants were asked to perform visual imagery in response to each image presented.###EEGDevice: EEG data were collected using the BioSemi ActiveTwo system.Electrode Configuration: 32 electrodes were placed according to the international 10-20 system. The electrode locations and names are as follows:Fpz, Fp1, Fp2, Fz, F3, F4, F7, F8, FCz, FC3, FC4, FT7, FT8, Cz, C3, C4, T7, T8, CP3, CP4, TP7, TP8, Pz, P3, P4, P7, P8, PO3, PO4, Oz, O1, O2The electrode names can be mapped to the default BioSemi naming scheme. Please refer to the BioSemi documentation for the exact layout: BioSemi Layoutand BioSemi Headcap.Sampling Rate: 1000HzReference Electrode: CPzGround Electrode: FpzData Type: EEG signals are measured in microvolts (μV), with "good" quality labels indicating high-quality data.###fNIRSDevice: fNIRS data were collected using the ETG-one system.Optode Configuration: The system is equipped with 8 light sources and 7 detectors to measure the absorption of light by the brain.Acquisition Method: Continuous Wave (CW) method for data collection.###Stimulus ImagesThe participants viewed three different images during the task: a dog, a cup, and the letter "A". Each image was presented 10 times in each run of the visual imagery task, where participants were required to imagine the corresponding object.Data Collection DetailsStimulus System: Stimulus presentation was controlled using E-Prime software.Experimental Conditions: Each participant went through multiple trials, with each trial presenting one of the three images. Participants were asked to perform mental imagery based on the image presented.Stimulus Mode: Each stimulus (dog, cup, and letter A) was presented as an image to the participants.These data are intended for analyzing the collaborative effect of EEG and fNIRS signals during a visual imagery task, particularly exploring the synergistic use of fNIRS and EEG data in brain function research.###LicenseThis dataset and accompanying code are licensed under the Creative Commons Attribution 4.0 International License (CC BY 4.0).You are free to share and adapt the material for any purpose, even commercially, provided that appropriate credit is given.For full license details, please see: https://creativecommons.org/licenses/by/4.0/