Multi-Frequency Steady-State Visual Evoked Potential Dataset

A detailed data descriptor is published in Scientific Data. Article can be accessed here. Please cite this article when using this dataset.Mu, J., Liu, S., Burkitt, A.N., Grayden, D.B.. Multi-frequency steady-state visual evoked potential dataset. Sci Data 11, 26 (2024). https://doi.org/10.1038/s41597-023-02841-5-----------------------------------------------------------------------------------This dataset includes steady-state visual evoked potentials (SSVEPs) collected using single-frequency, dual-frequency, and tri-frequency stimulation.File names: All files are named with the participant number and session number “P##_Ses#”, where P refers to Participant and Ses refers to Session. There are 9 sessions for each participant.Data available in both .mat and .csv format. Download data_in_csv.zip for all data in .csv format.Number of participants: 35 (20 female)Stimulation frequencies: 7, 11, 13, 17, 19, 23 HzStimulation methods:Single frequency (T1): 50% duty cycle square wavesDual frequency:Frequency superposition OR (T21) on 50% duty cycle square wavesFrequency superposition ADD (T22) on 50% duty cycle square waves, each at half brightnessCheckerboard pattern (T23) with 50% duty cycle square wavesTri frequency:Frequency superposition OR (T31) on 50% duty cycle square wavesFrequency superposition ADD (T32) on 50% duty cycle square waves, each at 1/3 brightnessNumber of stimuli:Tested with all possible frequency combinations in dual- and tri-frequency stimulation.Single frequency: 6 (one stimulus of each frequency)Dual frequency: 15 (C(6,2)=15)Tri frequency: 20 (C(6,3)=20)Sessions:Session 1: single frequency stimulationSessions 2-5: dual-frequency stimulationSessions 6-9: tri-frequency stimulationYou can use the Matlab code “dataset_processData.m” provided here to separate data (.mat) into trials. The separated data is then named “P##_T##_R#_#”, where P is Participant, T is Test (stimulation method), R is Repeat (each test is repeated 4 times), and the last number is stimuli index. Stimuli were randomly shuffled on the screen but the index does not change and lower frequencies have smaller index, e.g., 11 Hz has index 2 in T1, (7,17) combination has index 3 in T21, T22, T23. A pdf version of the code is also included (“dataset_processData.pdf”).Should you require further information, please email Jing Mu (jing.mu [at] unimelb.edu.au).

在《Scientific Data》期刊中发布了详细的数据描述。相关文章可通过以下链接访问。在使用本数据集时，请引用该文章。Mu, J., Liu, S., Burkitt, A.N., Grayden, D.B.（2024）。多频稳态视觉诱发电位数据集。Sci Data 11, 26。https://doi.org/10.1038/s41597-023-02841-5。

本数据集包含使用单频、双频和三频刺激收集的稳态视觉诱发电位（SSVEPs）。文件命名：所有文件均以参与者的编号和会话编号“P##_Ses#”命名，其中P代表参与者，Ses代表会话。每位参与者有9个会话可供分析。数据以.mat和.csv格式提供。请下载data_in_csv.zip以获取所有数据的.csv格式版本。参与人数：35人（女性20人）。刺激频率：7、11、13、17、19、23 Hz。刺激方法：

单频（T1）：50%占空比的方波。
双频：频率叠加OR（T21）于50%占空比的方波；频率叠加ADD（T22）于50%占空比的方波，每个频率亮度减半。
棋盘图案（T23）配合50%占空比的方波。
三频：频率叠加OR（T31）于50%占空比的方波；频率叠加ADD（T32）于50%占空比的方波，每个频率亮度为1/3。
刺激次数：在双频和三频刺激中测试了所有可能的频率组合。单频：6次（每个频率一个刺激）；双频：15次（C(6,2)=15）；三频：20次（C(6,3)=20）。会话安排：会话1：单频刺激；会话2-5：双频刺激；会话6-9：三频刺激。
您可以使用在此提供的Matlab代码“dataset_processData.m”将数据（.mat）分离成试验。分离后的数据命名为“P##_T##_R#_#”，其中P是参与者，T是测试（刺激方法），R是重复（每个测试重复4次），最后的数字是刺激索引。刺激在屏幕上随机打乱，但索引不变，低频的索引较小，例如11 Hz在T1中的索引为2，（7,17）组合在T21、T22、T23中的索引为3。同时还包括了代码的pdf版本（“dataset_processData.pdf”）。如需进一步信息，请联系Jing Mu（jing.mu [at] unimelb.edu.au）。