Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Grand average of FFT power spectra of the SSVEPs associated with the different emotional word categories at electrode position O1. Note that this is the average of single-trial power spectra and not the frequency spectrum of the time domain grand average. The evoked peak is seen around 7.5 Hz, corresponding to the frequency of the flickering stimulus. Around 1 Hz, electrophysiological activity is due to heartbeat artifacts.
