Table 8

Mean amplitudes of click evoked late latency responses (in μV), standard deviations (SD) and the results of t test
Age
 Parameter
 Group
 Mean
 SD
 t
 P
3 years
 P1
 Control
 2.10
 2.51
 0.520
 >0.05


Experimental
 1.64
 3.02


N1
 Control
 -1.83
 3.01
 0.869
 >0.05


Experimental
 -1.05
 2.83


P2
 Control
 2.15
 1.88
 1.404
 >0.05


Experimental
 1.04
 3.00


N2
 Control
 -2.56
 2.91
 1.129
 >0.05


Experimental
 -3.65
 3.22

4 years
 P1
 Control
 0.94
 1.10
 0.799
 >0.05


Experimental
 1.46
 2.54


N1
 Control
 -2.44
 1.52
 2.121
 >0.05


Experimental
 -1.35
 1.92


P2
 Control
 0.49
 1.48
 1.579
 >0.05


Experimental
 1.33
 1.76


N2
 Control
 -1.89
 1.96
 0.953
 >0.05


Experimental
 -2.63
 2.69

5 years
 P1
 Control
 1.26
 0.88
 1.794
 >0.05


Experimental
 1.74
 0.78


N1
 Control
 -0.94
 1.51
 0.559
 >0.05


Experimental
 -1.19
 1.38


P2
 Control
 0.58
 1.91
 2.130
 >0.05


Experimental
 -0.53
 1.95


N2
 Control
 -2.47
 1.46
 0.805
 >0.05


Experimental
 -2.13
 1.26

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