Information processing in brain and dynamic patterns of transmission during working memory task by the SDTF function

We studied the dynamical pattern of transmission involved in the information processing during cognitive experiments engaging working memory. The ensemble averaging approach was used to fit a multichannel autoregressive model to the EEG signals recorded during the transitive reasoning task. The short-time directed transfer function was estimated for finding dynamical patterns of functional connectivity during the memory and reasoning task. The results indicated that there exist particular areas where information is processed as envisaged by transmissions between closely located electrodes. In case of reasoning task these local circuits were located in frontal and parietal regions. These areas (these local circuits) from time to time exchange information between each other.