Early Face Processing of Internet Addiction Patients by Face-specific N170
- VernacularTitle:网络成瘾患者早期面孔加工N170的研究
- Author:
Lun ZHAO
;
Wenbin GAO
- Publication Type:Journal Article
- Keywords:
internet addiction;
event-related potentials (ERP);
face perception;
N170
- From:Space Medicine & Medical Engineering
2006;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study early face processing of internet addiction patients by using ERP method. Methods Ten healthy young man 18~21 years and 10 internet addiction patients 17~22 years served as subjects in experiment. Two runs of 300 stimuli (duration: 50 ms) of 3 facial and 3 non-facial pictures were randomly presented with equal probability (ISI: from 1 000 ms to 1 500 ms randomly), and the subjects were asked to react to facial stimuli and non-facial stimuli by pressing the left button and right button respectively as quickly as possible. Thirty two channel electroencephalogram (EEG) was recorded by Neuroscan Nuamps System. Results 1) Specific-face component Nd170 (face N170 minus object N170) was found in both groups, which was distributed at the temporal-occipital region in control groups but at occipital region in internet addiction group; 2) Compared with Nd170 in internet addiction group, Nd170 was significantly lower at occipital negion and delayed in control group. Conclusion The early face processing mechanism of internet addiction patients may be different from normal people.
