MedAssociates Fear Conditioning System
| Origin | USA |
|---|---|
| Supplier Type | Authorized Distributor |
| Import Status | Imported |
| Model | Fear Conditioning System |
| Pricing | Available Upon Request |
Overview
The MedAssociates Fear Conditioning System is a fully integrated, modular platform engineered for the precise acquisition and quantification of associative fear memory in rodent models. Based on Pavlovian fear conditioning paradigms, the system measures freezing behavior—a species-typical, ethologically validated immobility response—as the primary behavioral endpoint. Freezing is objectively detected via high-resolution video tracking synchronized with precisely timed delivery of conditioned stimuli (e.g., tone, light) and unconditioned stimuli (e.g., mild foot shock). The system supports both contextual and cued fear conditioning protocols, enabling dissociation of hippocampal-dependent (contextual) and amygdala-dependent (cued) memory processes. Designed for reproducible neurobehavioral phenotyping, it meets the experimental rigor required for preclinical evaluation of anxiolytic, anxiogenic, or cognition-modifying compounds under controlled environmental conditions.
Key Features
- Modular chamber design with interchangeable floor grids, wall inserts, and odorant ports to support contextual discrimination and sensory cue customization
- Programmable stimulus controller delivering calibrated auditory tones (1–20 kHz), visual cues (LED arrays), and precisely regulated foot shocks (0.05–0.8 mA, 0.1–5 s duration) with millisecond timing accuracy
- Real-time video-based motion analysis using proprietary algorithms optimized for rodent freezing detection (≥95% inter-rater concordance vs. manual scoring)
- Automated session sequencing: seamless transition between habituation, conditioning, and testing phases within a single protocol file
- Environmental control integration: optional temperature, humidity, and ambient light monitoring modules compliant with GLP-environmental logging standards
- Hardware redundancy and fail-safe stimulus termination logic to ensure animal welfare compliance per NIH Guide for Care and Use of Laboratory Animals
Sample Compatibility & Compliance
The system is validated for use with mice (C57BL/6, BALB/c, FVB, etc.) and rats (Sprague-Dawley, Long-Evans) across standard age and weight ranges (e.g., 20–40 g mice; 250–500 g rats). Chamber dimensions (30 × 24 × 21 cm) accommodate standard housing-compatible acclimation protocols. All electrical stimulation components comply with IEC 60601-1 safety standards for laboratory biomedical equipment. Data acquisition adheres to ALARA (As Low As Reasonably Achievable) principles for stimulus intensity calibration. The platform supports full audit trail generation and electronic signature capability—enabling alignment with FDA 21 CFR Part 11 requirements when deployed in regulated pharmacology studies.
Software & Data Management
Acquisition and analysis are managed through the proprietary VideoFreeze® software suite (v4.0+), which provides real-time freezing probability heatmaps, latency-to-freeze histograms, and trial-by-trial freezing bout statistics. Raw video, stimulus logs, and motion vectors are stored in vendor-neutral HDF5 format for long-term archival and third-party interoperability (e.g., MATLAB, Python Pandas). Export options include CSV, Excel, and XML metadata-embedded files compliant with MIAME and MINIMUM reporting guidelines. Software validation packages—including IQ/OQ documentation, version-controlled change logs, and cybersecurity hardening reports—are available for GxP environments.
Applications
- Preclinical screening of novel anxiolytics (e.g., GABAA modulators, CRF antagonists) and anxiogenics
- Investigation of fear extinction deficits in models of PTSD, generalized anxiety disorder, and OCD
- Genetic and optogenetic interrogation of neural circuits underlying memory consolidation and retrieval
- Evaluation of age-related or neurodegeneration-associated impairments in associative learning
- Pharmacokinetic–pharmacodynamic (PK–PD) correlation studies linking drug exposure to behavioral endpoints
- Multi-laboratory replication initiatives requiring standardized fear conditioning protocols (e.g., IMPC, ENIGMA)
FAQ
What species and strains are supported?
The system is validated for C57BL/6J, BALB/cJ, and CD-1 mice, as well as Sprague-Dawley and Long-Evans rats. Strain-specific parameter presets are included in the software library.
Is the foot shock module calibrated and traceable to NIST standards?
Yes—each shock module undergoes annual factory calibration with certificate of traceability to NIST SRM 2700. In-house verification protocols are provided in the user manual.
Can VideoFreeze® integrate with electrophysiology or calcium imaging rigs?
Yes—TTL synchronization inputs/outputs enable hardware-level alignment with neural recording systems (e.g., Intan, Neuropixels, Doric) and behavioral timestamps.
Does the system support automated retraining or reversal protocols?
Yes—customizable multi-phase protocols allow for extinction training, spontaneous recovery assessment, and renewal paradigms without manual intervention.
What regulatory documentation is available for GMP/GLP submissions?
Full validation packages—including risk assessments, URS, FAT/SAT reports, and 21 CFR Part 11 compliance statements—are supplied upon request for qualified research institutions.
