LINEAR-RESPONSE OF A FLUCTUATING LIPID BILAYER

Results of electrical measurements performed on diphytanoyl phosphatid ylcholine planar membranes are presented. The membranes are held in cu rrent-clamp conditions and a transition to a low-resistance non-statio nary flicker-fluctuating state is induced. In these conditions, the me mbrane is stimulated by a sine-wave input current and its electrical b ehaviour is completely characterized in a frequency range between 0.1 and 10 Hz. In this range, the sine-wave membrane response turns out to be linear. (C) 1998 Elsevier Science S.A. All rights reserved.