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Parallel Rod Test
SKU CS-958336
$2,290.00
IncludesStandard care
Behavioral apparatus for quantitative assessment of motor coordination and cerebellar function in rodents through parallel rod traversal tasks.
Scientist guidance
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Model fit
- 1 selectable configurations
- SKU family
- CS-958336
- Sizing
- Mouse: Width 15 cm · Length 15 cm; Automated Mouse/Rat: Width 30 cm · Length 30 cm; Rat: Width 22.5 cm · Length 22.5 cm; Mouse Set of 4: Width 15 cm · Length 15 cm; Rat Set of 4: Width 22.5 cm · Length 22.5 cm
- Ordering
- Online checkout and quote request available
- Category
- Behavioral Mazes
- Build notes
- Confirm accessories, station layout, and support needs before purchase
The Parallel Rod Test is a behavioral assessment apparatus designed to evaluate motor coordination, balance, and cerebellar function in rodents. The test consists of parallel stainless steel rods positioned at specified intervals that create a walking surface requiring precise motor control. Animals traverse the rod array while researchers quantify locomotor activity and foot slip events as measures of motor impairment or coordination deficits.
Available in multiple configurations for mice and rats, the apparatus features rod diameters of 1.6mm (mouse) or 1.9mm (rat) with inter-rod spacing optimized for each species. Automated versions incorporate infrared photoelectric sensors for objective recording of paw slips and locomotion patterns without manual observation bias. The test protocol typically involves a habituation period followed by brief assessment sessions to capture baseline motor function or treatment-induced changes in coordination.
How It Works
The parallel rod test exploits the natural tendency of rodents to maintain balance while traversing narrow surfaces. The apparatus presents a series of parallel rods that require precise paw placement and coordinated limb movement. When animals place their paws between rods or experience balance loss, foot slip events occur that can be quantified as a measure of motor dysfunction. The spacing and diameter of rods are calibrated to challenge the animal's motor system while remaining traversable for healthy subjects.
Automated versions utilize infrared photoelectric sensors positioned along the rod array to detect interruptions in light beams caused by paw movements or body positioning. This detection system enables objective recording of locomotor parameters including traversal time, number of beam breaks, and foot slip frequency without requiring direct visual observation. The sensor data is processed through computer software to generate quantitative metrics of motor performance.
The test capitalizes on cerebellar-dependent motor learning and coordination mechanisms. Animals with cerebellar lesions, genetic mutations affecting motor pathways, or pharmacological impairment demonstrate increased foot slip rates and altered gait patterns compared to control subjects, making this a sensitive measure of motor dysfunction across various experimental paradigms.
Features & Benefits
Species-specific rod configurations
Optimized rod diameter (1.6mm mouse, 1.9mm rat) and spacing (6mm mouse, 9mm rat) provide appropriate challenge levels for each species without excessive difficulty.
Automated photoelectric detection
Infrared sensors eliminate observer bias and provide objective quantification of paw slips and locomotor activity with precise temporal resolution.
Standardized testing protocols
Defined habituation periods (45-60 minutes) and assessment durations (1-5 minutes) enable reproducible results across laboratories and experimental conditions.
Multiple apparatus configurations
Available as individual units or sets of 4 chambers for simultaneous testing to increase experimental throughput and reduce inter-session variability.
No bottom chamber design
Open bottom construction allows natural rod traversal behavior without confinement effects that could influence motor performance assessment.
Acrylic and stainless steel construction
Durable materials withstand repeated cleaning protocols and maintain structural integrity across extended experimental periods.
Computer software integration
Automated data collection and analysis capabilities provide quantitative metrics including slip frequency, traversal time, and locomotor patterns.
Add-ons and modifications
| Add-on | Price |
|---|---|
| Parallel Rod | $1,390 |
Add any of these to your quote request.
Sizes by model
| Measurement | Mouse | Automated Mouse/Rat | Rat | Mouse Set of 4 | Rat Set of 4 |
|---|---|---|---|---|---|
| Width | 15 cm | 30 cm | 22.5 cm | 15 cm | 22.5 cm |
| Length | 15 cm | 30 cm | 22.5 cm | 15 cm | 22.5 cm |
| Height | 20 cm | 20 cm | 30 cm | 20 cm | 30 cm |
| Inter-rod spacing | 1.6 mm | 1.6 mm | 1.9 mm | 1.6 mm | 1.9 mm |
- Mouse: Rods: 6 mm
- Automated Mouse/Rat: Rods: 6 mm
- Automated Mouse/Rat: Includes photoelectric sensors, control box and software
- Rat: Rods: 9 mm
- Mouse Set of 4: Sizer per unit (4)
- Mouse Set of 4: Rods: 6 mm
- Rat Set of 4: Size per unit (4)
- Rat Set of 4: Rods: 9 mm
Shipping weight
- 6.06 lb
Shipping box
- L: 65.0 cm
- W: 36.0 cm
- H: 27.0 cm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Rod Diameter Precision | 1.6mm (mouse) and 1.9mm (rat) diameter rods with consistent manufacturing tolerances | Variable rod dimensions with less precise manufacturing specifications | Standardized rod dimensions ensure reproducible challenge levels across laboratories and experimental sessions. |
| Inter-rod Spacing | Species-optimized spacing of 6mm (mouse) and 9mm (rat) between parallel rods | Fixed spacing that may not be optimal for both mouse and rat testing | Species-appropriate spacing provides suitable difficulty without excessive challenge that could mask subtle motor deficits. |
| Detection Method | Infrared photoelectric sensors for automated paw slip and locomotion recording | Manual observation or basic contact sensors with lower temporal resolution | Automated detection eliminates observer bias and provides precise temporal data for quantitative motor assessment. |
| Chamber Configuration | Open bottom design without confinement walls | Enclosed chambers that may influence natural traversal behavior | Open design allows natural motor behavior expression without confinement-induced stress or altered movement patterns. |
| Multiple Unit Options | Available as individual units or sets of 4 chambers for simultaneous testing | Single unit configurations requiring sequential testing | Multiple chamber options increase experimental throughput and reduce between-session variability for group comparisons. |
| Testing Protocol Standardization | Defined habituation periods (45-60 minutes) and assessment durations (1-5 minutes) | Variable or unspecified testing protocols across different apparatus designs | Standardized protocols enhance reproducibility and enable direct comparison of results across studies and laboratories. |
This parallel rod test system provides species-optimized rod configurations with automated detection capabilities and standardized protocols. The combination of precise rod dimensions, infrared sensing technology, and open chamber design offers sensitive motor coordination assessment with reduced observer bias and enhanced reproducibility compared to basic manual observation systems.
| Model | Size | SKU | Listed price | Status | Shipping box |
|---|---|---|---|---|---|
| Mouse | Width 15 cm · Length 15 cm · Height 20 cm · Inter-rod spacing 1.6 mm | CS-958336 | $790.00 | Available | 65.0 x 36.0 x 27.0 cm |
| Automated Mouse/Rat | Width 30 cm · Length 30 cm · Height 20 cm · Inter-rod spacing 1.6 mm | CS-958336 | $790.00 | Available | 65.0 x 36.0 x 27.0 cm |
| Rat | Width 22.5 cm · Length 22.5 cm · Height 30 cm · Inter-rod spacing 1.9 mm | CS-958336 | $890.00 | Available | 65.0 x 36.0 x 27.0 cm |
| Mouse Set of 4 | Width 15 cm · Length 15 cm · Height 20 cm · Inter-rod spacing 1.6 mm | CS-958336 | $2,190.00 | Available | 65.0 x 36.0 x 27.0 cm |
| Rat Set of 4 | Width 22.5 cm · Length 22.5 cm · Height 30 cm · Inter-rod spacing 1.9 mm | CS-958336 | $2,290.00 | Available | 65.0 x 36.0 x 27.0 cm |
Neuroscience
Assessment of cerebellar function and motor coordination deficits in mouse models of ataxia, spinocerebellar degenerations, and movement disorders.
Behavioral Pharmacology
Evaluation of drug-induced motor impairment or therapeutic efficacy of compounds targeting motor coordination pathways in preclinical studies.
Neurodegeneration
Longitudinal monitoring of progressive motor decline in animal models of Huntington's disease, Parkinson's disease, and cerebellar ataxias.
Toxicology
Detection of neurotoxic effects on motor coordination following exposure to environmental toxins, industrial chemicals, or pharmaceutical compounds.
Addiction Research
Quantification of alcohol-induced motor impairment and assessment of tolerance development in chronic ethanol exposure paradigms.
Aging Research
Characterization of age-related decline in balance and motor coordination across different mouse and rat strains.
Practical Tips
Calibration
Verify photoelectric sensor alignment and sensitivity before each testing session by moving a test object through the detection zone.
Why: Proper sensor calibration ensures accurate detection of paw movements and prevents false readings that could skew motor coordination measurements.
Maintenance
Clean stainless steel rods with 70% ethanol between animals and inspect for wear or damage that could affect grip surface.
Why: Contamination or surface irregularities on rods can alter traction and introduce confounding variables in motor performance assessment.
Best Practices
Allow full habituation periods of 45-60 minutes and conduct testing at consistent times of day to minimize circadian rhythm effects.
Why: Adequate habituation reduces anxiety-related behaviors while consistent timing controls for natural activity pattern variations that could influence motor performance.
Data Quality
Record multiple baseline sessions before experimental interventions to establish individual animal performance profiles.
Why: Baseline variability assessment improves statistical power for detecting treatment effects and accounts for individual differences in motor coordination abilities.
Troubleshooting
If animals refuse to traverse the rods, check for proper rod spacing and consider brief training sessions with food motivation.
Why: Avoidance behavior can indicate inappropriate apparatus settings or insufficient motivation, leading to incomplete data collection and reduced experimental validity.
Safety
Position soft padding beneath the apparatus to prevent injury from falls during testing sessions.
Why: Falls from the rod array could cause injury and create an aversive association that affects subsequent testing performance and animal welfare.
Best Practices
Monitor ambient lighting conditions and maintain consistent illumination to prevent shadows that could interfere with sensor detection.
Why: Variable lighting can affect both animal behavior and photoelectric sensor performance, introducing unwanted variability in motor coordination measurements.
Data Quality
Record video backup of testing sessions to enable post-hoc verification of automated sensor data and identification of unusual behaviors.
Why: Video records provide qualitative context for quantitative sensor data and enable validation of automated measurements in cases of unexpected results.
Setup Guide
Unpack and Inspect Components
Remove the parallel rod apparatus from packaging and verify all components including the acrylic frame, stainless steel rods, and electronic sensors (if automated version).
Assemble Rod Array
Install parallel rods into the frame ensuring proper spacing (6mm for mouse, 9mm for rat versions) and secure rod positioning at specified heights.
Connect Detection System
Attach photoelectric sensors and electrical connections to the activity monitor base plate using provided clips for automated recording versions.
Software Configuration
Install and configure computer software for data acquisition, setting appropriate parameters for testing duration and detection sensitivity.
Environmental Setup
Position apparatus in a quiet testing room with consistent lighting and temperature conditions to minimize external variables affecting behavior.
System Calibration
Test sensor functionality and beam alignment by moving objects through the detection zone to verify proper signal registration and data recording.
Protocol Implementation
Begin testing sessions with habituation periods of 45-60 minutes followed by assessment trials lasting 1-5 minutes depending on experimental objectives.
What’s in the Box
- Parallel rod apparatus frame (acrylic construction)
- Stainless steel rod set with species-appropriate dimensions
- Photoelectric sensor assembly (automated versions)
- Electrical connection clips
- Activity monitor base plate connection hardware
- Computer software installation media (typical)
- User manual and setup instructions (typical)
- Calibration verification tools (typical)
Warranty
ConductScience provides standard manufacturer warranty coverage for one year from date of purchase, including technical support for setup, calibration, and troubleshooting assistance.
Compliance
ARRIVE GuidelinesParallel rod testing supports standardized reporting of animal research methodology and behavioral outcome measures in preclinical studies.
NIH Guidelines for Research Involving Recombinant DNAMotor coordination assessment is commonly used in studies of genetically modified animal models requiring adherence to recombinant DNA research protocols.
Q
How sensitive is the parallel rod test for detecting subtle motor coordination deficits?
A
The test can detect motor impairments through quantification of foot slip events and altered gait patterns, with sensitivity dependent on rod spacing, diameter, and testing duration. Subtle deficits may require multiple trial sessions or comparison with baseline performance to achieve statistical significance.
Q
What is the optimal testing duration for different experimental applications?
A
Foot slip assessment typically uses 1-minute trials to capture acute motor performance, while locomotor activity evaluation employs 5-minute sessions. Longer durations may introduce fatigue effects that confound motor coordination measurements.
Q
How does habituation time affect test reliability?
A
The recommended 45-60 minute habituation period allows animals to acclimate to the testing environment and reduces stress-induced behavioral variability. Insufficient habituation can result in increased foot slips due to anxiety rather than motor dysfunction.
Q
Can the apparatus accommodate different animal sizes within species?
A
Rod spacing and diameter are optimized for average adult mice (1.6mm rods, 6mm spacing) and rats (1.9mm rods, 9mm spacing). Very large or small animals may require protocol modifications or alternative testing paradigms for optimal assessment.
Q
What maintenance procedures are required for automated sensor systems?
A
Regular cleaning of photoelectric sensors and verification of beam alignment are essential for consistent detection accuracy. Sensor calibration should be verified before each testing session to ensure proper signal registration and data quality.
Q
How does this test compare to rotarod assessment for motor function evaluation?
A
Parallel rod testing evaluates static balance and precise paw placement skills, while rotarod assesses dynamic balance and motor learning. Both tests provide complementary information about different aspects of motor coordination and cerebellar function.
Q
What environmental factors can influence test results?
A
Lighting conditions, ambient noise, temperature, and humidity can affect animal behavior and sensor performance. Consistent environmental conditions and proper apparatus positioning are crucial for reliable and reproducible results.
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ConductVision is our video-tracking software. Record your sessions on video, and it scores standard rodent tests, such as those listed below.
Examples of tests it scores
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Parallel Rod Test
$2,290.00
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