. 2016 Jan 5;27(2):1337–1346. doi: 10.1093/cercor/bhv321

Table 1.

Behavioral and ERP results compared with neutral adaptor (or tone adaptor for the auditory condition)

	Happy adaptor	Happy + laughter adaptor	Laughter adaptor	Tone adaptor
Behavioral (PSE)	***, Correlated with neural attenuation of P_late response (at CPz) to happy test faces	***, N.A.	**, Correlated with neural attenuation of P_late response (at CPz) to happy test faces	N.S.
ERP response to happy test face	Suppressed N2 (parieto-occipital), suppressed P_late (central-parietal)	N.A.	Suppressed P_late (central-parietal)
ERP response to sad test face	Enhanced N2 (parieto-occipital), quickened P_late (central-parietal)	N.A.	Quickened P_late (central-parietal)

**, ***, and N.S. indicate significance levels P < 0.01, P < 0.001, and no significance, respectively.

N.A., the comparisons are not critical to the experiment.