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. Author manuscript; available in PMC: 2009 Jun 3.
Published in final edited form as: Curr Biol. 2008 May 22;18(11):803–807. doi: 10.1016/j.cub.2008.04.060

Figure 4.

Figure 4

Rhythms in spike amplitude are abolished in Gprk2 mutant and overexpression flies. Single unit recordings were made from flies entrained for at least 3 days in LD cycles. Spike amplitudes were quantified from the A neuron of ab1 (A), ab3 (B), and T2 (C) sensillae. Mean amplitude was calculated from a minimum of 40 spikes at each timepoint. Error bars denote SEM. Spontaneous spike amplitudes of ab1 (A) or ab3 (B) sensillae from Gprk26936 and GPRK2 overexpression (GPRK2 OE) flies during LD cycles. Spontaneous spike amplitudes of T2 (C) sensillae from Gprk2pj1 (left) and GPRK2 OE flies during LD cycles. Mean spike amplitudes at ZT5 and ZT17 for ab1 and ab3 sensillae and ZT5 and ZT21 for T2 sensillae were not significantly different in Gprk2 mutants and GPRK2 OE flies (P> 0.1). Mean spike amplitudes between Gprk2 mutants and GPRK2 OE flies at peak and trough time points was significant in all three sensillar classes (P< 0.0001).