Figure 4
From: Testing covariance models for MEG source reconstruction of hippocampal activity
Results of simulations within the hippocampus. (A) Model evidence scores of the three simulation scenarios across nine SNR steps for sources in the posterior of the hippocampal body (left) and anterior hippocampal (right). (B) Spatial map of the difference in evidence between cEBB to EBB models (cEBB-EBB) for a pair of uncorrelated sources with an SNR of − 10 dB. The changes were negative in most cases (i.e. an uncorrelated EBB was a more likely model) but in the anterior portion we observed that the correlated model was erroneously selected to be more likely. (C) A binarised map to show where the simulations correctly identified the underlying sources were uncorrelated (blue), and incorrectly suggested them to be correlated (red). (D) A map of the correlation of the lead fields between homologous source pairs in the hippocampi. Note the strong positive correlation between the anterior hippocampal pairs.
