Table 2.

Neurodevelopmental tests, postnatal days of their introduction with positive and negative criteria

Reflex test	Postnatal day of introduction	Positive results	Examples of negatively assessed responses
Forelimb grasping	3	Two forepaws grasp rod	One forepaw grasp rod
Hindlimb grasping	3	Two hind paws grasp rod	One hind paws grasp rod
Righting	3	Full righting in 15 s	No perfect righting
Hindlimb placing	4	Bending of both stimulated hind paws	Bending of one of stimulated paws
Cliff avoidance	4	Movement away from the cliff edge	One forepaw on the cliff edge
Gait	6	At least both forepaws beyond the circle rim in 30 s	One forepaw beyond the circle rim
Auditory startle	10	Flexing body after stimulus	No response
Eye opening	12	Both fully open eyes	None or one open eye
Posture	13	Abdomen above the ground and vertically oriented limbs during movement	No rising the abdomen above the ground and paws spread wide apart
Accelerated righting	14	Full body rotation and successful fall on four legs	No successful fall on four legs