A method was demonstrated based on Infomax independent component analysis(Infomax ICA) for automatically extracting auditory P300 signals within several trials. A signaling equilibrium algorithm was proposed to enhanc...A method was demonstrated based on Infomax independent component analysis(Infomax ICA) for automatically extracting auditory P300 signals within several trials. A signaling equilibrium algorithm was proposed to enhance the effectiveness of the Infomax ICA decomposition. After the mixed signal was decomposed by Infomax ICA, the independent component(IC) used in auditory P300 reconstruction was automatically chosen by using the standard deviation of the fixed temporal pattern. And the result of auditory P300 was reconstructed using the selected ICs. The experimental results show that the auditory P300 can be detected automatically within five trials. The Pearson correlation coefficient between the standard signal and the signal detected using the proposed method is significantly greater than that between the standard signal and the signal detected using the average method within five trials. The wave pattern result obtained using the proposed algorithm is better and more similar to the standard signal than that obtained by the average method for the same number of trials. Therefore, the proposed method can automatically detect the effective auditory P300 within several trials.展开更多
Sixty-two cerebral traumatic patients were randomly divided into two groups: acupuncturegroup (32 cases) and physiotherapy group (30 cases) . The changes of mini-mental status examination(MMSE) scores and auditory evo...Sixty-two cerebral traumatic patients were randomly divided into two groups: acupuncturegroup (32 cases) and physiotherapy group (30 cases) . The changes of mini-mental status examination(MMSE) scores and auditory evoked potential P300 were observed bofore and aiter treatment. Results: themarkedly effective rate and the total effective rate of the acupuncture group were 46. 9% and 81 . 3% respec-tively, which were significantly higher than that of 10. 0% and 30. 0% of the physiottierapy group (P < 0.01 ) . It was found that after treatment the above-mentioned indexes in the acupuncture group changed signifi-cantly (P < 0 . 05 ￣0. 001 ) , while in the physiotherapy group they were not(P >0. 05) . The therapeutic ef-fect in acupunctrue group was better than that in physiotherapy group (P< 0 . 001 ) . The results confirmed thatthe cognitive function of cerebral traumatic dementia patients was enhanced effectively after acupuncturingHouxi (S13 ) and Shenmen (HT7) .展开更多
基金Projects(81460273,61265006)supported by the National Natural Science Foundation of ChinaProject(2013GXNSFAA019325)supported by Guangxi Natural Science Foundation,ChinaProject(1348020-10)supported by Guangxi Science and Technology Program,China
文摘A method was demonstrated based on Infomax independent component analysis(Infomax ICA) for automatically extracting auditory P300 signals within several trials. A signaling equilibrium algorithm was proposed to enhance the effectiveness of the Infomax ICA decomposition. After the mixed signal was decomposed by Infomax ICA, the independent component(IC) used in auditory P300 reconstruction was automatically chosen by using the standard deviation of the fixed temporal pattern. And the result of auditory P300 was reconstructed using the selected ICs. The experimental results show that the auditory P300 can be detected automatically within five trials. The Pearson correlation coefficient between the standard signal and the signal detected using the proposed method is significantly greater than that between the standard signal and the signal detected using the average method within five trials. The wave pattern result obtained using the proposed algorithm is better and more similar to the standard signal than that obtained by the average method for the same number of trials. Therefore, the proposed method can automatically detect the effective auditory P300 within several trials.
文摘Sixty-two cerebral traumatic patients were randomly divided into two groups: acupuncturegroup (32 cases) and physiotherapy group (30 cases) . The changes of mini-mental status examination(MMSE) scores and auditory evoked potential P300 were observed bofore and aiter treatment. Results: themarkedly effective rate and the total effective rate of the acupuncture group were 46. 9% and 81 . 3% respec-tively, which were significantly higher than that of 10. 0% and 30. 0% of the physiottierapy group (P < 0.01 ) . It was found that after treatment the above-mentioned indexes in the acupuncture group changed signifi-cantly (P < 0 . 05 ￣0. 001 ) , while in the physiotherapy group they were not(P >0. 05) . The therapeutic ef-fect in acupunctrue group was better than that in physiotherapy group (P< 0 . 001 ) . The results confirmed thatthe cognitive function of cerebral traumatic dementia patients was enhanced effectively after acupuncturingHouxi (S13 ) and Shenmen (HT7) .
