Behavioral and Brain Functions

Table 1 Significant differences in ERP latencies.

From: Event-related potentials to task-irrelevant changes in facial expressions

	Fearful-deviant		Happy-deviant
	Latency range	t- and p-values	Latency range	t- and p-values
Fz	109 – 127	t = 2.2 – 3.5	123 – 172	t = 2.2 – 3.5
		p = .005 – .049		p = .005 – .047
	137 – 162	t = 2.2 – 3.2
		p = .009 – .048
			260 – 282	t = 2.2 – 3.3
				p = .007 – .047
Cz	112 – 156	t = 2.2 – 3.6	124 – 168	t = 2.2 – 3.9
		p = .005 – .047		p = .002 – .047
Pz	No differences		281 – 300	t = 2.2 – 3.9 p = .002 – .048
Oz	164 – 183	t = 2.3 – 2.6	142–153	t = 2.2 – 2.9
		p = .023 – .045		p = .014 – .049
	296 – 330	t = 2.6 – 5.5	280 – 302	t = 2.2 – 3.8
		p = .0001 – .046		p = .003 – .047
			319 – 341	t = 2.4 – 3.4
				p = .006 – .038
O1			140 – 154	t = 2.2 – 3.3
				p = .007 – .049
	174 – 185	t = 2.6 – 3.2
		p = .008 – .039
	300 – 323	t = 2.3 – 5.2	319 – 341	t = 2.3 – 3.6
		p = .0001 – .042		p = .004 – .040
O2			142 – 151	t = 2.3 – 2.7
				p = .019 – .046
	164 – 185	t = 2.2 – 4.44
		p = .001 – .048
			202 – 218	t = 2.2 – 2.5
				p = .032 – .047
			253 – 305	t = 2.3 – 5.6
				p = .0001 – .045
	281 – 331	t = 2.3 – 4.5	318 – 340	t = 2.4 – 4.6
		p = .001 – .042		p = .001 – .038

Table 1. The latencies (in ms) of significant differences (alpha level < .05 over at least 10 consecutive data points, i.e. 10 ms) between ERPs to standards and those to deviants as suggested by point-by-point t-tests. The results are shown separately for fearful and happy deviants and different electrode sites. T and p-values are the minimum and maximum values across the test results within the latency-range periods.

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ISSN: 1744-9081

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