Morris Water Plus Maze Insert
Four-armed water maze insert that converts traditional Morris water maze into specialized apparatus for studying magnetoreception and cardinal direction-based spatial navigation in rodents.
Louise Corscadden, PhD
Neuroscience · ConductScience
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The Morris Water Plus Maze Insert transforms the traditional circular Morris water maze into a specialized four-armed apparatus designed for investigating magnetoreception and magnetically-guided spatial behavior in rodents. This insert creates a plus-maze configuration where each arm aligns with cardinal directions, enabling researchers to manipulate earth-strength magnetic fields through integrated coil systems while maintaining the fundamental spatial learning paradigm of the Morris water maze.
The system addresses limitations of traditional circular water mazes in magnetoreception research by providing discrete directional choices and eliminating geometric biases. Rodents must locate a submerged escape platform positioned in one of four arms while researchers can systematically alter magnetic orientation (north, east, south, west) to assess magnetic compass-based navigation. The apparatus requires controlled environmental conditions including electromagnetic shielding, uniform lighting, and consistent wall textures to isolate magnetic cues from potential confounding directional information.
How It Works
The Morris Water Plus Maze Insert operates on the principle of controlled magnetic field manipulation combined with spatial escape learning. The four-armed configuration provides discrete directional choices aligned with cardinal compass directions, while paired electromagnetic coils generate earth-strength magnetic fields that can be rotated to any of the four cardinal orientations. This allows researchers to dissociate magnetic compass information from fixed visual or geometric cues in the testing environment.
During testing sessions, rodents must locate a submerged platform positioned in one of the four arms while the magnetic field orientation is systematically varied. Success requires integration of magnetic compass information with spatial memory, as animals learn to associate the escape platform location with magnetic direction rather than fixed room cues. The opaque water eliminates visual platform detection, forcing reliance on spatial navigation strategies.
Environmental control is critical for isolating magnetic cues. Sound insulation, uniform overhead lighting, consistent wall textures, and electromagnetic shielding eliminate alternative directional information sources. The vibration-dampened concrete base prevents mechanical disturbances that could provide additional orientation cues, ensuring that magnetic field manipulation remains the primary variable for directional reference.
Features & Benefits
available_sizes
- ['4 Feet', '5 Feet', '6 Feet']
maze_configuration
- four-armed (plus) maze
cardinal_alignment
- four arms align with cardinal directions
magnetic_field_management
- pair of coils to manipulate earth-strength magnetic field
magnetic_orientation_options
- ['north', 'east', 'south', 'west']
escape_platform
- submerged platform for training sessions
water_requirement
- opaque water
environmental_requirements
- sound-insulated room, uniformly square room with consistent wall textures, radially-symmetric overhead lighting, vibration-dampened concrete base
Behavioral Construct
- spatial learning
- spatial memory
- magnetoreception
- navigation
- compass orientation
Automation Level
- manual
Species
- Mouse
- Rat
Research Domain
- Behavioral Pharmacology
- Developmental Biology
- Learning and Memory
- Neurodegeneration
- Neuroscience
Compatible Tracking Software
- ConductVision
Weight
- 6.06 kg
Dimensions
- L: 65.0 mm
- W: 36.0 mm
- H: 27.0 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Maze Configuration | Four-armed plus maze with cardinal direction alignment | Circular mazes without discrete directional choices | Eliminates geometric biases and provides clear cardinal direction options for magnetic compass assessment. |
| Magnetic Field Control | Integrated electromagnetic coils for north, east, south, west orientations | Fixed magnetic environments or external field manipulation | Allows systematic magnetic field rotation within the apparatus for controlled magnetoreception studies. |
| Size Options | Available in 4, 5, and 6 foot configurations | Single size configurations | Accommodates different rodent species and experimental space requirements while maintaining consistent spatial demands. |
| Environmental Integration | Designed for electromagnetic shielding and controlled environment requirements | Standard maze designs without magnetoreception considerations | Enables isolation of magnetic cues from confounding directional information for clean experimental results. |
The Morris Water Plus Maze Insert uniquely combines the established Morris water maze paradigm with specialized magnetic field control capabilities, providing researchers with a validated platform for magnetoreception studies that maintains the motivational and procedural advantages of water-based escape learning.
Practical Tips
Verify magnetic field strength and directional accuracy using a calibrated magnetometer before each experimental series.
Why: Ensures consistent magnetic field parameters across testing sessions and maintains experimental validity.
Regularly inspect electromagnetic coils for proper positioning and electrical continuity to prevent field distortions.
Why: Maintains precise magnetic field generation and prevents experimental artifacts from equipment malfunction.
Allow 24-48 hour environmental stabilization period after any changes to electromagnetic shielding or room configuration.
Why: Permits magnetic field equilibration and eliminates transient electromagnetic disturbances that could affect results.
Record ambient magnetic field measurements and electromagnetic interference levels during each testing session.
Why: Provides essential environmental context for data interpretation and identifies potential confounding factors.
If animals show inconsistent navigation patterns, verify absence of ferromagnetic materials within 3 meters of the apparatus.
Why: Metal objects can distort magnetic fields and create false directional cues that compromise experimental results.
Ensure all electromagnetic equipment is properly grounded and complies with laboratory electrical safety standards.
Why: Prevents electrical hazards and maintains safe working conditions around water-based testing apparatus.
Setup Guide
What’s in the Box
- Four-armed maze insert (typical)
- Electromagnetic coil positioning system (typical)
- Submerged platform assembly (typical)
- Installation hardware (typical)
- Setup and calibration documentation (typical)
Warranty
ConductScience provides standard one-year manufacturer warranty covering materials and workmanship, with technical support for setup and calibration procedures.
Compliance
References
Background reading relevant to this product:
What magnetic field strength range is required for effective magnetoreception testing?
The system requires earth-strength magnetic field generation capability. Consult product datasheet for specific field strength specifications and calibration procedures for your experimental requirements.
How does the plus maze configuration compare to traditional circular Morris water maze for spatial learning assessment?
The four-armed design provides discrete directional choices that eliminate geometric biases of circular mazes, enabling isolation of magnetic compass navigation from visual-spatial learning while maintaining the fundamental escape learning paradigm.
What environmental controls are critical for valid magnetoreception experiments?
Essential controls include electromagnetic shielding, sound insulation, uniform lighting, consistent wall textures, vibration isolation, and elimination of ferromagnetic materials that could provide alternative directional cues.
Can the apparatus be used for traditional Morris water maze protocols without magnetic field manipulation?
Yes, the insert maintains core spatial learning capabilities of Morris water maze while adding magnetic field control options, allowing both traditional and magnetoreception-based protocols.
What training protocols are recommended for establishing magnetic compass-based navigation?
Protocols typically involve systematic magnetic field rotation across cardinal directions while maintaining consistent platform location relative to magnetic orientation. Consult magnetoreception literature for specific training paradigms.
How frequently requires calibration of the magnetic field system?
Regular calibration of magnetic field strength and directional accuracy is recommended before each experimental series. Consult product datasheet for specific calibration intervals and procedures.
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