%My code
Nbin=length(t) ;
df=fs/L ; %Frequency resolution
EEG_1Spec=0:70.87;
figure;
subplot(2,1,1);
stem(df,abs(EEG_1Spec));
plot(EEG_1Spec);
title('EEG_1Spec');
xlabel('frequency(Hz)');
ylabel('Amplitude(microV)');
subplot(2,1,2);
VEPconvAveSpec=fft(127); %Number of EEGdata/Gain=130048/1024
stem(VEPconvAveSpec);
plot(VEPconvAveSpec);
title('VEPconvAveSpec');
xlabel('frequency(Hz)');
ylabel('Amplitude(microV)');