کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1548402 | 997737 | 2009 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of excessive Internet use on the time–frequency characteristic of EEG Effect of excessive Internet use on the time–frequency characteristic of EEG](/preview/png/1548402.png)
We examined the effect of excessive Internet use on the time–frequency characteristic of the electroencephalogram by wavelet transformed and non-negative matrix factorization (NMF). The event-related potentials (ERP) of normal subjects and excessive Internet users were acquired using the oddball paradigm experiment. We applied the wavelet transformed and event-related spectral perturbation to ERP in order to extract the time–frequency values. The F-test statistics of time–frequency values were then decomposed into two components by NMF. Excessive Internet use resulted in a significant decrease in the P300 amplitudes (P < 0.05) and a significant increase in the P300 latency (P < 0.05) in all electrodes. The major effect of excessive Internet use on gamma oscillation occurred at ∼300 ms after stimuli at 40–50 Hz on the parietal central region. Thus, these data suggest that excessive Internet use affects information coding and integration in the brain.
Journal: Progress in Natural Science - Volume 19, Issue 10, 10 October 2009, Pages 1383–1387