If you want to use continuous .wav audio files (e.g. concatenated speech or music) during EEG or reaction time (RT) experiments, you can add cue points (as text markers) directly to your .wav audio files to ensure timing precision. Presentation can read these cue points as the sound attribute “cue events”. For more information see…

Introduction Using markers during electroencephalography (EEG) helps to identify specific events in your data. When analyzing data the markers become crucial for synchronizing epochs or identify responses. It is of paramount importance that these markers are very precise; any jitter reduces the quality of your data. The accuracy of markers is of less importance. Markers…

Wikipedia has the following to say about FFR: Frequency following response (FFR), also referred to as Frequency Following Potential (FFP), is an evoked response generated by continuous presentation of low-frequency tone stimuli. Part of the auditory brainstem response (ABR), the FFR reflects sustained neural activity integrated over a population of neural elements. Running an FFR…