Scurry Mouse Misstep Wheel

Model 80821S


This complete 80820S style Activity Wheel Chamber package features rungs that can be easily removed to create a complex wheel rung surface similar to the Motor Skill Sequence (MOSS) test in mice.


The 80821S is a complete housing unit featuring improvements for animal well being and the ease maintenance of system components. The chamber includes food and water support and includes free access to the activity wheel. The plug-in Sensor/Counter (Model 86110) used with this chamber is easily removed for convenient maintenance as well as total chamber cleaning. Counters, Interface and Software must be ordered separately.

Additional standard wheel - 80820RW is included to facilitate quick changes from one style wheel to the other.

Additional MOSS wheels are also available on request.

The 80821S Scurry Mouse Activity Wheel is a variation on the standard voluntary running wheel Model 80820S where individual rungs may be removed to create a complex wheel or rung configuration. The complex wheel has been used to introduce the running wheel based Motor Skill Sequence (MOSS) in mice. This method has been used in the subchronic MPTP mouse model of Parkinson's disease. It has also been employed to display behavioral deficits of corpus callosum re- and demyelination in the cuprizone mouse mode of multiple sclerosis.


  • Each of 38 rungs,  0.188" (4.8mm) diameter, is removable as needed to create the desired pattern
  • Uses 9.3" x 13.9" x 7.7" clear polycarbonate cage
  • Stainless steel top cover lays flush onto polycarbonate cage
  • All components are secured to top cover for one step removal
  • Feeder and water bottle are attached to top cover allowing for easy access. Optional hopper bracket available for hopper only removal when daily weighing is required.
  • Feeder has sighting slot on back to view feed level
  • Removable lightweight 5" diameter anodized aluminum wheel is easy to clean and maintain and is virtually friction free running on two Rulon bearings
  • Removable stainless steel vented access hatch allows for easy access to the animal
  • Complete chamber can be easily disassembled for cleaning


  • Overall Dimensions: 13.9”L x 9.25"W x 7.875”H (35.3 23.5 x 20 cm)
  • Weight: 5.8 lbs.
  • Wheel Diameter: 5.0" ID (12.7 cm)
  • Run Distance: 0.40 meters/revolution
  • Wheel Drag:  < 3 grams
  • Run Surface: (All rungs in place, standard configuration)
    • 38 rods 0.188" diameter on 0.4298" centers with a 0.2418" gap
    • approx. 4.8 mm dia on 10.9 mm centers with a 6.14 mm gap
    • 2.25" (5.72 cm) width (Inside)
  • Two Wheels Included: Standard 38 Rung and a configurable MOSS Wheel


Required Accessories

Scurry Interface for Animal Activity
Scurry Interface for Animal Activity
Model 86100

Monitor up to 16 Activity Wheels or Triple Lickometers with a single USB port. All wheel/lickometer support is handled by the Interface without encumbering computer resources.

Scurry Activity Monitoring Software
Scurry Activity Monitoring Software
Model 86165

Scurry features streamlined, user-friendly electronics with integrated wheel and lick monitoring, programmable brakes with improved control and resolution, and a robust interface with secure data backup.

Scurry Mouse Activity Counter
Scurry Mouse Activity Counter
Model 86110

All in one I/R sensor/counter for Scurry Mouse Activity Wheels.

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