Does Repeated Ticking Maintain Tic Behavior? An Experimental Study of Eye Blinking in Healthy Individuals

Table 1

Means and standard deviations of change scores on the three VAS items.

	Mean change scores on VAS items (SD)
		Puff		No puff
Blink	Intensity	−5.33 (4.57)	Intensity	0.56 (4.34)
	Annoyance	−15.03 (3.82)	Annoyance	−1.38 (3.90)
	Urge	−33.18 (5.24)	Urge	−24.42 (6.13)
No blink	Intensity	−5.28 (5.37)	Intensity	−2.94 (4.49)
	Annoyance	3.03 (5.99)	Annoyance	0.85 (3.97)
	Urge	−13.54 (4.90)	Urge	−9.24 (4.51)