Transfer functions of the lumped alpha model [B,A]=lumped(K [,Fs]) [B,A] are the denominator and nominator, resp. , for a the coupling parameter K and the sampling frequency Fs [default 128Hz]. Reference)(s) [1] Lopes da Silva FH, Hoeks A, Smits H, Zetterberg LH. Model of brain rhythmic activity. The alpha-rhythm of the thalamus. Kybernetik. 1974 May 31;15(1):27-37. [2] P. Suffcynski, Thesis, 1999. [3] Alois Schl�l (2000) The electroencephalogram and the adaptive autoregressive model: theory and applications Shaker Verlag, Aachen, Germany,(ISBN3-8265-7640-3).