Abstract P114.

	Duration (ms)				Centre frequency (Hz)			Max frequency (Hz)
	1	2	3	1		2	3		1	2	3
CVA	52*	225	69	359*		516	391*		1469*	1672	938
EB	57	168*	115*	234*		578	266*		1734*	1734	578*
GORD	59	217	68	516*		1172*	297*		3281*	3399*	781

Data expressed as median values.

*Statistical significance to other groups.