Table 1. Summary of parameters used for the CAEP capture.

	Parameter
Stimulus	Mode	Bilateral—sound field (speaker positioned at one meter and 0° azimuth—centralized)
	Rate	0.9 stimuli per second
	Type	Speech: /ba/ frequent; /da/ rare
	Intensity	20 to 25 dB SL, minimum 80 dB, not over 85 dB
	Polarity	Alternated
Acquisition	Channel	2 channel
	Electrode	Fz (+), A1 (-)
		Cz (+), A2 (-)
		Jumper connected to reference inputs (-)
	Filter	0,1–30 Hz
	Signal Amplification	50.000 times
	Sampling	200 stimuli* - 80% frequent and 20% rare
	Electrode Impedance	≤ 5 Kohms
	Patient condition	Alert ignoring stimulus

* The considered number of artifacts from the total stimulus was up to 10%.