Connectivity anarysis using the partial correlation in the ictal early stage

Abstract

In this study , we estimated the connectivity configuration of epileptiform discharges in the ictal earlystage from electrocorticography of intractable epilepsy . In this time , we propose estimation methodusing partial correlation function(PCF) and conpared the estimated result used PCF and used cross-correlation function(CCF) because it is considered that more correct connectivity is estimated . Boththe estimated result used PCF and CCF is seen connectivity which is temporal lobe inside to frontal lobe and temporal lobe inside to temporal lobe outside . Only proposal method is seen connectivity which is temporal lobe outside to frontal lobe . Guessable that ECoG of intractable epilepsy is propagated frontal lobe and one part of temporal lobe outside from temporal lobe inside and else temporal lobe outside fromfrontal lobe because there is the epileptic focus on the hippocampus .