Table 7

Mean latencies (in ms) of click evoked late latency responses, standard deviations (SD) and the results of t test
Age
 Parameter
 Group
 Mean
 SD
 t
 p
3 years
 P1
 Control
 95.40
 16.98
 3.013
 <0.01


Experimental
 81.30
 12.22


N1
 Control
 168.40
 32.10
 3.908
 <0.01


Experimental
 134.60
 21.57


P2
 Control
 235.90
 36.67
 5.008
 <0.01


Experimental
 183.55
 28.98


N2
 Control
 296.80
 38.38
 3.695
 <0.01


Experimental
 256.85
 29.40

4 years
 P1
 Control
 79.38
 16.40
 0.893
 >0.05


Experimental
 84.05
 17.69


N1
 Control
 147.61
 36.61
 0.152
 >0.05


Experimental
 149.20
 27.40


P2
 Control
 205.55
 49.03
 0.185
 >0.05


Experimental
 208.45
 47.14


N2
 Control
 259.27
 44.72
 0.699
 >0.05


Experimental
 270.30
 51.64

5 years
 P1
 Control
 70.40
 13.70
 0.580
 >0.05


Experimental
 72.95
 14.11


N1
 Control
 120.68
 31.36
 0.367
 >0.05


Experimental
 123.95
 23.91


P2
 Control
 154.30
 36.84
 0.840
 >0.05


Experimental
 163.10
 28.98


N2
 Control
 217.90
 34.87
 0.683
 >0.05


Experimental
 211.80
 19.46

Maruthy and Mannarukrishnaiah Behavioral and Brain Functions 2008 4:17   doi:10.1186/1744-9081-4-17