Table 1. Immaturity at birth alters amplitudes of ERP touch responses.

Differences in ERP amplitudes between full-term and preterm infants: Comparison of responses to touch between term and preterm infants in four time windows of significance.

Tactile processing mean amplitude in full-term and preterm infants in identified time intervals post-stimulus (μV; 95% confidence interval indicated)
Stimulus	Time (ms)	Full-term	Preterm	p
Touch	171–240	0.33 (−0.09,1.16)	−0.24 (−0.60,0.26)	<0.001*
Touch	241–340	0.75 (0.19,1.37)	−0.10 (−0.53,0.56)	<0.001*
Touch	341–400	0.27 (−0.40,1.14)	−0.17 (−0.73,0.70)	0.051*
Touch	401–500	0.07 (−0.71,0.92)	−0.18 (−0.93,0.62)	0.212
Sham	171–240	0.32 (−0.35,0.73)	0.12 (−0.24,0.26)	0.291
Sham	241–340	0.14 (−0.31,0.81)	0.05 (−.37,0.41)	0.319
Sham	341–400	0.09 (−0.46,0.66)	−0.11 (−0.56,0.51)	0.603
Sham	401–500	0.24 (−0.61,1.05)	−0.07 (−0.72,0.52)	0.212

^*Wilcoxon Rank Sum test. All results expressed as median amplitude (interquartile range).

^**Increase in microvolts ERP response per 1week unit in the predictor