Fig. 4
From: Role of GABA in the regulation of the central circadian clock of the suprachiasmatic nucleus
Variety of circadian rhythm recording techniques. a Different parameters can be measured using different methods. Clock gene expression rhythms can be measured with bioluminescence reporters. Cytosolic calcium concentrations can be measured with fluorescent probes. Neuronal activity can be recorded using patch clamp or multi-electrode array dish techniques. b SCN cell preparations for recording circadian rhythms. Individual SCN properties may depend on the coupling strength and the age of mice