An automated method for generating analogic signals that embody the Markov kinetics of model ionic channels.
In this work we present an automated method for generating electrical signals which reflect the kinetics of ionic channels that have custom-tailored intermediate sub-states and intermediate reaction constants. The concept of our virtual single-channel waveform generator makes use of two software platforms, one for the numerical generation of single channel traces stemming from a pre-defined model and another for the digital-to-analog conversion of such numerical generated single channel traces. This technique of continuous generation and recording of the activity of a model ionic channel provides an efficient protocol to teach neophytes in the field of single-channel electrophysiology about its major phenomenological facets. Random analogic signals generated by using our technique can be successfully employed in a number of applications, such us: assisted learning of the single-molecule kinetic investigation via electrical recordings, impedance spectroscopy, the evaluation of linear frequency response of neurons and the study of stochastic resonance of ion channels.
Luchian
Tudor
T
Department of Biophysics and Medical Physics, Faculty of Physics, Alexandru I. Cuza University, Iasi, Romania. luchian@uaic.ro
D000818:Animals; D001331:Automation / Q000379:methods*; D004594:Electrophysiology; D015640:Ion Channel Gating / Q000502:physiology*; D007473:Ion Channels / Q000502:physiology*; D007700:Kinetics; D008390:Markov Chains; D008954:Models, Biological; D012815:Signal Processing, Computer-Assisted
D007473:Ion Channels