Table 3.

HomeCageScan metrics and operational definitions.

HomeCageScan metrics			Operational definitions	Units
Oromotor	Drinking	Frequency	Number of times that the animal's snout is in close proximity to the defined water spout in the act of drinking.	events/bin
		Duration	The length of time the animal spends drinking as analyzed by the animal's snout being within close proximity to the defined water spout starting from a non-drinking position, to active drinking, until finished.	seconds/bin
	Eating	Frequency	Number of times that the animal's snout is at/near the defined food hopper in the act of eating.	events/bin
		Duration	The length of time the animal spends eating as analyzed by the animal's snout being at/near the defined food hopper from a non-eating position, to active eating, until finished.	seconds/bin
	Grooming	Frequency	The number of times the animal's snout is in close proximity to its body and the body deforms into a grooming position while making specific grooming movements with its head, paws, and body.	events/bin
		Duration	The length of time an animal spends in a grooming position, with the animal's snout in close proximity to its body and making specific grooming movements with its head, paws, and body.	seconds/bin
Non-Oromotor	Walking Slowly	Frequency	The number of times that the animal makes any sideways movement that does not have a definite directional component.	events/bin
	Come Down	Duration	The length of time an animal spends moving from a fully reared up position to a low position.	seconds/bin
	Hang vertically from hang cuddled	Duration	The length of time and animal spends moving from a hang cuddled position to a hang vertical position (note: the hang cuddled position involves the animal having all four limbs at the top of the cage in a horizontal position).	seconds/bin

Each “bin” represents a 24 h period of data collection.