Table 2.

MNI coordinates for the M50 source locations and their respective pseudo-z threshold (Thresh.) values at p < 0.001 derived via non-parametric permutation testing adapted for beamformer source imaging (Nichols and A. P. Holmes, 2002; Singh et al., 2003).

Control Participants
	Left Hemisphere				Right Hemisphere
	X	Y	Z	Thresh.	X	Y	Z	Thresh.
Tone	−53	−20	5	2.14	48	−20	−5	2.43
Listen /a/	−53	−32	5	1.64	48	−25	−5	1.99
Speak /a/	−53	−22	10	1.50	51	−23	0	1.63

Children who Stutter
	Left Hemisphere				Right Hemisphere
	X	Y	Z	Thresh.	X	Y	Z	Thresh.
Tone	−55	−20	8	2.02	58	−18	2	1.76
Listen /a/	−55	−20	5	1.37	53	−20	5	1.54
Speak /a/	−55	−22	13	1.11	58	−15	8	1.15