Table 1.

Means, standard deviations, t-values, and p-values of right (F4 and F8) and left (F3 and F7) frontal hemispheres at quiet and noisy workplaces.

Workplace	Location	Mean (M)	Standard Deviation (SD)	t-Value	p-Value
Quiet	F4	−3.708	0.428	3.202	0.003 **
	F3	−4.204	0.799
	F8	−3.614	0.705	0.678	0.254
	F7	−3.666	0.725
Noisy	F4	−4.043	0.441	4.535	0.000 ***
	F3	−3.719	0.354
	F8	−3.779	0.522	1.083	0.149
	F7	−3.657	0.645

Note. t-test: ** p < 0.01, and *** p < 0.001.