TSE Systems MazeSuite™ – Fully Automated Rodent Behavioral Testing Platform for Spatial Memory, Anxiety, and Learning Assessment

Overview

The TSE Systems MazeSuite™ is a modular, fully computerized platform engineered for rigorous, reproducible behavioral phenotyping of laboratory rodents—primarily mice and rats—in neuroscience, pharmacology, and cognitive disorder research. Built upon validated ethological paradigms, the system integrates multiple standardized maze configurations—including Morris Water Maze (MWM), Radial Arm Maze (RAM), T-Maze, and Elevated Plus Maze (EPM)—each implemented with high-precision infrared (IR) position tracking, synchronized video acquisition, and deterministic event logging. The core measurement principle relies on spatial-temporal trajectory reconstruction via calibrated IR beam arrays (for dry mazes) or submersible IR-emitting platforms combined with low-light CCD imaging (for water-based assays). All hardware modules communicate bidirectionally with the central control unit—a dedicated Windows-based PC running TSE’s proprietary MazeControl™ software—enabling real-time stimulus triggering, automated trial initiation/termination, and timestamped behavioral annotation aligned to physiological or pharmacological interventions. Designed for longitudinal studies under controlled environmental conditions (e.g., consistent ambient lighting, temperature, and sound attenuation), MazeSuite™ supports GLP-compliant experimental workflows through audit-trail-enabled data capture and export in standardized formats (e.g., WinTrack-compatible .trk, CSV, and HDF5).

Key Features

• Fully integrated hardware-software architecture with synchronized IR tracking (spatial resolution ≤ 1 cm) and HD video recording (720p @ 30 fps, low-noise CCD sensor)
• Modular maze chassis compatible with standard IACUC-approved dimensions: MWM pool diameters (120–180 cm), RAM arm lengths (40–60 cm), T-Maze arm width (10 cm), and EPM arm length (50 cm)
• Configurable trial logic engine: user-defined termination criteria (e.g., latency threshold, arm entries, platform contact, swim time limit), randomized start positions, and adaptive reward scheduling
• Automated pellet delivery system (TSE-certified dust-free 20 mg sucrose pellets) with weight-calibrated dispensers and IR-based consumption verification
• Hardware expandability: optional olfactory cue chambers, tactile discrimination inserts, motorized gate actuators, and integration-ready ports for EEG/EMG telemetry systems

Sample Compatibility & Compliance

MazeSuite™ is validated for use with C57BL/6, BALB/c, Sprague-Dawley, and Wistar strains across age ranges (postnatal day 60–365), with weight-adjusted protocols for juvenile, adult, and aged cohorts. All mazes meet NIH Guide for the Care and Use of Laboratory Animals specifications for structural integrity, edge height, and non-slip surface treatment. The system supports compliance with international regulatory frameworks including OECD Test Guideline 426 (Neurotoxicity Study), FDA Guidance for Industry on Cognitive Endpoints in Alzheimer’s Trials, and ISO/IEC 17025 requirements for measurement traceability. Data integrity adheres to 21 CFR Part 11 principles: electronic signatures, role-based access control, immutable audit logs, and encrypted database backups.

Software & Data Management

MazeControl™ v5.2 provides a unified interface for experiment design, live monitoring, and post-hoc analysis. It enables batch processing of trajectory datasets using built-in algorithms for path efficiency, thigmotaxis index, center zone occupancy, and arm entry sequence fidelity. Export modules generate publication-ready outputs compliant with FAIR data principles: time-stamped CSV files with millisecond precision, WinTrack-compatible binary trajectories, and annotated video exports with overlaid heatmaps and zone boundaries. Integration APIs support MATLAB, Python (via PyMazeSDK), and R packages for custom statistical modeling (e.g., mixed-effects regression of latency vs. genotype × treatment). Raw data archives are stored in hierarchical directory structures with SHA-256 checksums for long-term reproducibility.

Applications

• Spatial learning and reference memory assessment (MWM probe trials, RAM working/reference memory errors)
• Anxiolytic/anxiogenic compound screening (EPM open-arm time ratio, risk-assessment stretching)
• Executive function evaluation (T-Maze forced alternation, delayed non-match-to-sample tasks)
• Neurodegenerative disease modeling (hippocampal-dependent deficits in APP/PS1 mice, striatal dysfunction in Q175 HD models)
• Pharmacokinetic–pharmacodynamic correlation studies (dose–response curves for NMDA antagonists, cholinesterase inhibitors)

FAQ

What is the minimum required computer specification to run MazeControl™ software?

A Windows 10/11 64-bit system with Intel Core i5-8400 or equivalent, 16 GB RAM, dedicated GPU (NVIDIA GTX 1050 or higher), and two free USB 3.0 ports is required.

Can MazeSuite™ be used for both acute and chronic behavioral testing protocols?

Yes—the system supports repeated daily trials over 14+ days with automated cleaning cycle prompts, environmental parameter logging (temperature/humidity), and inter-trial interval randomization to minimize circadian confounds.

Is calibration required before each experiment?

Initial geometric calibration (using supplied grid template) is performed once per setup; subsequent daily validation checks are automated via internal IR reference points and video frame alignment routines.

Does the system support third-party stimulus delivery devices?

Yes—MazeControl™ includes TTL-triggered I/O ports (8 digital inputs/outputs) and serial command protocol documentation for integration with optogenetic lasers, auditory tone generators, or pneumatic odor dispensers.

How is animal welfare ensured during water maze testing?

All MWM protocols enforce strict thermal regulation (water temperature maintained at 22 ± 1°C), maximum trial duration limits (90 s standard), and automated rescue triggers if immobility exceeds 5 s—compliant with ARRIVE 2.0 guidelines.