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Table 2. 

Peak Latencies, Mean Amplitudes, SEMs, t Values, and Significance Levels of the N400 Effect during Different Task Conditions and Time Windows Measured from the Difference Waves Relative to a 0-μV Baseline

Condition
Electrode
Peak Latency (msec)
Time Window (msec)
Mean (μV)
SEM (μV)
t(19)
p
Passive task 55 489 339–439 −1.21 0.34 −3.53 ** 
439–539 −1.31 0.45 −2.90 ** 
539–639 −1.02 0.43 −2.40 * 
Letter task 39 528 378–478 −2.26 0.52 −4.35 *** 
478–578 −3.71 0.53 −7.02 **** 
578–678 −3.05 0.62 −4.91 **** 
Word task 49 463 313–413 −2.14 0.52 −4.12 *** 
413–513 −3.67 0.67 −5.49 **** 
513–613 −3.15 0.67 −4.72 *** 
Condition
Electrode
Peak Latency (msec)
Time Window (msec)
Mean (μV)
SEM (μV)
t(19)
p
Passive task 55 489 339–439 −1.21 0.34 −3.53 ** 
439–539 −1.31 0.45 −2.90 ** 
539–639 −1.02 0.43 −2.40 * 
Letter task 39 528 378–478 −2.26 0.52 −4.35 *** 
478–578 −3.71 0.53 −7.02 **** 
578–678 −3.05 0.62 −4.91 **** 
Word task 49 463 313–413 −2.14 0.52 −4.12 *** 
413–513 −3.67 0.67 −5.49 **** 
513–613 −3.15 0.67 −4.72 *** 

*p < .05.

**p < .01.

***p < .001.

****p < .0001.

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