“…Among the different ways of decoding brain activity, Electroencephalography (EEG) is receiving a strong interest by the scientific community since it is non-invasive, cheap, and is endowed with high temporal resolution to allow real-time operation [3], [4]. In fact, different EEG-based BCI paradigms, such as P300 [5] and Motor Imagery [6]- [10] have already been successfully employed in several contexts but, in particular, Steady-State Visually Evoked Potentials (SSVEPs) have gained outstanding relevance for the development of applications in healthcare, [11], [12] entertainment [13], and industry [14], [15] owing to quick response, easy detection, high signalto-noise ratio (SNR) [16]. As a matter of fact, the classification of SSVEPs can be performed with good results even with simple, trainingless algorithms, such as Power Spectral Density Analysis (PSDA) or Canonical Correlation Analysis (CCA) [17].…”