Grade | Points | Symptoms of neurological behavior |
---|---|---|
Normal (no neurological deficit) | 0 | Rats behave normally, can fully outstretch forelimbs toward the ground when lifting tails and dangling. |
Mild neurological deficit | 1 | Rats cannot fully stretch their left forelimbs when lifting tails and dangling. |
Moderate neurological deficit | 2 | Rats have decreased resistance to lateral push and mild neurological behavior. |
Severe neurological deficit | 3 | Rats turn around into a circle, and have mild and moderate neurological behavior. |
4 | Rats do not walk spontaneously and have a depressed level of consciousness. |