Score left, right, and both-paw wall contacts, map lesion side, calculate Schallert asymmetry index, and export animal-level CSV.
Enter left-only, right-only, both-paw, and optional no-contact events. Lesion side determines ipsilateral and contralateral assignment automatically.
| Animal | Group | Lesion side | Left only | Right only | Both paws | None | Contacts |
|---|---|---|---|---|---|---|---|
| 22 | |||||||
| 21 | |||||||
| 20 |
| Animal | Group | Ipsi | Contra | Both | Asymmetry index | Left use |
|---|---|---|---|---|---|---|
| M1 | sham | 9 | 8 | 5 | 0.045 | 40.9% |
| M2 | 6OHDA | 14 | 3 | 4 | 0.524 | 66.7% |
| M3 | 6OHDA | 13 | 2 | 5 | 0.550 | 10.0% |
Don't use for
The cylinder test is a spontaneous forelimb-use assay. A rodent is placed in a transparent cylinder and the observer scores wall contacts made with the left paw, right paw, or both paws during vertical exploration.
Because unilateral motor lesions often reduce use of the contralateral forelimb, the assay is widely used in 6-OHDA, MCAO stroke, and other lateralized sensorimotor models.
This scorer assigns ipsilateral and contralateral contacts from the lesion side. It computes the Schallert asymmetry index as (ipsilateral - contralateral) / (ipsilateral + contralateral + both). It also reports percent left use as left-only contacts divided by all left, right, and both-paw contacts.
None events are exported for audit context but are not included in the asymmetry denominator.
Predefine contact rules, score enough contacts per animal, and blind observers to treatment or lesion status when possible. Clean the cylinder between animals and avoid reflections or lighting artifacts that make paw contact calls ambiguous.
Balance testing time and habituation because arousal and exploratory drive can change the number of usable contacts.
Transparent cylinder setup for spontaneous forelimb-use asymmetry testing
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