Glial and Neuronal Generators of Sustained Potential Shifts Associated with Electrographic Seizures

Abstract

Listen

Translate article

There is no precise, formal, agreed boundary between slow EEG waves and sustained potential (SP) shifts. I use the term “SP” for shifts of voltage that last a second or more but do not exceed a few minutes and, in most cases, do not repeat or oscillate (Somjen, 1970, 1973). An imprecise but practical demarcation is given in that SP shifts cannot be recorded with conventional EEG recorders because they require DCcoupled amplification. Other authors have used the terms “DC potential,” “steady potential,” or “slow potential,” meaning more or less the same (Caspers et al., 1987; Haschke et al., 1993).