@misc{indiciaebd1d9e8ecfb0, title = {MEG covariance difference analysis: a method to extract target source activities by using task and control measurements.}, author = {K Sekihara and D Poeppel and A Marantz and C Phillips and H Koizumi and Y Miyashita}, year = {1998}, doi = {10.1109/10.650357}, url = {https://pubmed.ncbi.nlm.nih.gov/9444843/}, note = {Source identifier: 9444843} }