How can I detect epileptic from eeg signals

I have some data files broken into both x and y training and testing datasets, I want to start over and identify epileptic signals from them

how can i startfrom here

%Load data from files
X_train = load('X_train.mat')
x_test = load('x_test.mat')

Y_train = load('Y_train.mat')
y_test = load('y_test.mat')