Photic and Pineal Modulation of Food Anticipatory Circadian Activity Rhythms in Rodents
Figure 1
Group mean (± sem) waveforms of activity measured by telemetry in rats maintained in skeleton (red curve) and full photoperiods (blue curve).
A. Food available ad-libitum. B. Food available for 3-h/day (green shading). The LD cycle during the full photoperiod is indicated by the horizontal yellow and black bars above the abscissa. Light exposure in the skeleton photoperiod is indicated by the vertical yellow bars. Time is plotted in 10 min bins, from the beginning of lights-on (Zeitgeber Time 0).