TY - RPRT TI - MEG covariance difference analysis: a method to extract target source activities by using task and control measurements. AU - K Sekihara AU - D Poeppel AU - A Marantz AU - C Phillips AU - H Koizumi AU - Y Miyashita PY - 1998 DO - 10.1109/10.650357 UR - https://pubmed.ncbi.nlm.nih.gov/9444843/ ID - 9444843 ER -