Table 1. Differences between VVS and PPS as far as objective parameters, clinical features and yearly number of episodes are concerned.

PPS, psychogenic pseudosyncope; TLOC, transient loss of consciousness; TTT, Tilt-Table Testing; VVS, vasovagal syncope

	Objective Parameters (during TTT)	TLOC Clinical Features	Average number of attacks per year
	Hemodynamic parameters	EEG	Eyes closure	Duration TLOC
	Blood pressure	Heart rate	Alpha rhythm
VVS	Decreased	Decreased	Slowing	7%	<1minute	Low (4±2 per year)
PPS	Increased or normal	Slightly increased or normal	Normal	97%	>1minute	High (53±35 per year)