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In this letter, we show that the trajectory of electroencephalogram (EEG) possesses the character of time reversal asymmetry, which can provide information about the entropy production of EEG. We develop a kind of new method to estimate symbolic relative entropy and entropy production using forward and backward trajectories. Finally, we use this method to dispose and analyse the EEGs of younger and elder people, and is turned out that this method works and the average energy dissipation can be used as a parameter to detect nonequilibrium.
[1] Roldan E, Parrondo J M R 2010 Phys. Rev. Lett. 105 150607
[2] Costa M, Goldberger A L, Peng C K 2010 Phys. Rev. Lett. 95 198102
[3] Costa M, Peng C K, Goldberger A L 2008 Cardiovasc Eng. 8 88
[4] Shen W, Wang J 2011 Acta Phys. Sin. 60 118702 [沈韡, 王俊 2011 60 118702]
[5] Porporato A, Rigby J R, Daly E 2007 Phys. Rev. Lett. 98 094101
[6] Huang J H, Liu N H, Liu J T, Yu T B, He X 2010 Chin. Phys. B 19 110312
[7] Lu H X, Zhao B 2006 Chin. Phys. B 15 1914
[8] Meng Q F, Zhou W D, Chen Y H, Peng Y H 2010 Acta Phys. Sin. 59 123 (in Chinese) [孟庆芳, 周卫东, 陈月辉, 彭玉华 2010 59 123]
[9] Bian H R, Wang J, Han C X, Deng B, Wei X L, Che Y Q 2011 Acta Phys. Sin. 60 118701 (in Chinese) [边洪瑞, 王江, 韩春晓, 邓斌, 魏熙乐, 车艳秋 2011 60 118701]
[10] Fang X L, Jiang Z L 2007 Acta Phys. Sin. 56 7330 (in Chinese) [方小玲, 姜宗来 2011 56 7330]
[11] Ma Q L, Bian C H, Wang J 2010 Acta Phys. Sin. 59 4480 (in Chinese) [马千里, 卞春华, 王俊 2010 59 4480]
[12] Xie Y, Xu J X 2002 Acta Phys. Sin. 51205 (in Chinese) [谢勇, 徐健学 2002 51 205]
[13] You R Y, Chen Z, Xu S C, Wu B X 2004 Acta Phys. Sin. 53 2882 (in Chinese) [游荣义, 陈忠, 徐慎初, 吴伯僖 2004 53 2882]
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[1] Roldan E, Parrondo J M R 2010 Phys. Rev. Lett. 105 150607
[2] Costa M, Goldberger A L, Peng C K 2010 Phys. Rev. Lett. 95 198102
[3] Costa M, Peng C K, Goldberger A L 2008 Cardiovasc Eng. 8 88
[4] Shen W, Wang J 2011 Acta Phys. Sin. 60 118702 [沈韡, 王俊 2011 60 118702]
[5] Porporato A, Rigby J R, Daly E 2007 Phys. Rev. Lett. 98 094101
[6] Huang J H, Liu N H, Liu J T, Yu T B, He X 2010 Chin. Phys. B 19 110312
[7] Lu H X, Zhao B 2006 Chin. Phys. B 15 1914
[8] Meng Q F, Zhou W D, Chen Y H, Peng Y H 2010 Acta Phys. Sin. 59 123 (in Chinese) [孟庆芳, 周卫东, 陈月辉, 彭玉华 2010 59 123]
[9] Bian H R, Wang J, Han C X, Deng B, Wei X L, Che Y Q 2011 Acta Phys. Sin. 60 118701 (in Chinese) [边洪瑞, 王江, 韩春晓, 邓斌, 魏熙乐, 车艳秋 2011 60 118701]
[10] Fang X L, Jiang Z L 2007 Acta Phys. Sin. 56 7330 (in Chinese) [方小玲, 姜宗来 2011 56 7330]
[11] Ma Q L, Bian C H, Wang J 2010 Acta Phys. Sin. 59 4480 (in Chinese) [马千里, 卞春华, 王俊 2010 59 4480]
[12] Xie Y, Xu J X 2002 Acta Phys. Sin. 51205 (in Chinese) [谢勇, 徐健学 2002 51 205]
[13] You R Y, Chen Z, Xu S C, Wu B X 2004 Acta Phys. Sin. 53 2882 (in Chinese) [游荣义, 陈忠, 徐慎初, 吴伯僖 2004 53 2882]
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