Flies expressing qsm^Scer\UAS.cCa under the control of Scer\GAL4^tim.PE exhibit some short-period rhythmic locomotor behavior in constant dim white light, in contrast to control flies which largely show arrhythmic behavior in these conditions. These flies do not exhibit any difference in locomotor rhythms when kept in constant darkness, as compared to controls.

The l-LNv neurons in flies expressing qsm^Scer\UAS.cCa under the control of Scer\GAL4^Pdf.PU exhibit a hyperpolarized resting membrane potential, and a reduced spontaneous firing rate during the daytime, but not during the night, as compared to wild type; these neurons also fail to respond to blue light stimulus, in contrast to wild type.