Fig. 1
From: Light sampling behaviour regulates circadian entrainment in mice
Experimental setup. A Photo of nestbox in-situ, with passive-infrared sensor (PIR) above cage. B Schematic of nestbox design (not to scale), with PIRs. C Light levels across nestbox and cage, measured using an XL-500 BLE Spectroradiometer (NanoLambda, Korea), with location of water bottle and food hopper marked