Corrigendum to ?Functional cortical source connectivity of resting state electroencephalographic alpha rhythms shows similar abnormalities in patients with mild cognitive impairment due to Alzheimer{'}s and Parkinson{'}s diseases? [Clin. Neurophysiol. 129 (2018) 766?782] (Clinical Neurophysiology (2018) 129(4) (766?782), (S1388245718300245), (10.1016/j.clinph.2018.01.009))