Fig. 7.

Oscillation of Ca²⁺-imaging signal. a Traces of Ca²⁺-imaging signals of the application of 0.1 and 1 µM DA. The latter concentration induced in 61.6% (n = 125) of the recordings oscillations of the Ca²⁺-imaging signal. b Exemplary traces of the addition of 0.1 and 0.3 µM AMP. Oscillations of the Ca²⁺-imaging signal were induced by the application of 0.3 µM AMP in 94.0% (n = 50) of the recordings. c Periodogram based on the mean results of FFT analysis of the oscillations induced by 1 µM DA (n = 6) and 0.3 µM AMP (n = 10) highlighting a main oscillation frequency. d Main oscillation frequency for 1 µM DA and 0.3 µM AMP are 0.201 ± 0.002 Hz (n = 6) and 0.234 ± 0.007 Hz (n = 10), respectively. Statistical significance was determined between DA and AMP (*, significant)