TABLE 4.
T test results of the latencies of P1, N1, and P2 components
| Group | N | Mean (ms) | Std. Deviation | t | df | p | |
|---|---|---|---|---|---|---|---|
| P1m | Control | 9 | 62.0000 | 16.27882 | −1.55120322 | 20 | 0.136533678 |
| Experimental | 13 | 77.4615 | 26.53179 | p>0.05 | |||
| P1g | Control | 9 | 42.5556 | 20.18112 | 1.961249395 | 20 | 0.063922822 |
| Experimental | 13 | 64.4615 | 28.88372 | p>0.05 | |||
| P1t | Control | 9 | 46.3333 | 20.71835 | 1.458833621 | 20 | 0.160138341 |
| Experimental | 13 | 64.0769 | 32.01682 | p>0.05 | |||
| N1m | Control | 9 | 100.4444 | 21.34895 | −1.7929891 | 20 | 0.088113118 |
| Experimental | 13 | 123.3846 | 33.86871 | p>0.05 | |||
| N1g | Control | 9 | 78.2222 | 21.74729 | 1.761332729 | 20 | 0.093463744 |
| Experimental | 13 | 104.1538 | 40.07461 | p>0.05 | |||
| N1t | Control | 9 | 86.3333 | 20.97618 | 1.119844432 | 20 | 0.276048661 |
| Experimental | 13 | 103.0000 | 40.86563 | p>0.05 | |||
| P2m | Control | 9 | 167.7778 | 11.99768 | 1.573263245 | 20 | 0.131344595 |
| Experimental | 13 | 185.7692 | 32.60663 | p>0.05 | |||
| P2g | Control | 9 | 151.6667 | 10.74709 | 1.548528665 | 20 | 0.137174226 |
| Experimental | 13 | 170.2308 | 34.59565 | p>0.05 | |||
| P2t | Control | 9 | 158.8889 | 7.70462 | −0.37458929 | 20 | 0.711908345 |
| Experimental | 13 | 165.0000 | 48.16119 | p>0.05 |
P1m: The mean amplitude of P1 when /m/ was used as stimulus; P1g: The mean amplitude of P1 when /g/ was used as stimulus; P1t: The mean amplitude of P1 when /t/ was used as stimulus; N1m: The mean amplitude of N1 when /m/ was used as stimulus; N1g: The mean amplitude of N1 when /g/ was used as stimulus; N1t: The mean amplitude of P1 when /t/ was used as stimulus; P2m: The mean amplitude of P2 when /m/ was used as stimulus; P2g: The mean amplitude of P2 when /g/ was used as stimulus; P2t: The mean amplitude of P2 when /t/ was used as stimulus