9Anderson C W, Stolz E A, Shamsunder S. Multivariate autoregressive models for classification of spontaneous electroencephalographic signals during mental tasks [J]. IEEE Trar, s on BME, 1998, 45(3):277-286.
10Isen A M. Positive affect and decision making [M].Edited by and Michael Lewis, Jeannette M. Haviland Jones, Handbook of emotions 2nded., New York: The Guilford Press, 2000:417--419.
