Task Completion Time
Time to navigate from start to goal chamber
ConductVision · Behavioral Analysis
Repeated Acquisition and Performance Chamber
Multi-chamber system for high-throughput spatial learning assessment.
RodentLearning & MemoryAuto Export
ConductVision / Repeated Acquisition and Performance Chamber
Recording / Trial 3subject tracked
Time to First Entry85s
Shock Zone Entries3.2
Max Avoidance245s
Key Parameters
Metrics automatically extracted by ConductVision.
Error Count
Incorrect door attempts per trial
Acquisition Rate
Trial-over-trial error reduction slope
Performance Stability
Error variance on fixed sequences indexing reliability
Response Time
Latency to respond to auditory or visual cues
Correct Choices
Proportion of trials with correct door selection at each decision point
+ 5 more parameters trackedShow allHide
Acquisition vs Performance Errors
Error difference between novel and fixed sequences — learning vs retrieval
Perseverative Errors
Repeated incorrect choices at the same decision point
Sequence Position Effect
Error rate by position in the door sequence — primacy/recency patterns
Inter-Response Interval
Time between successive door choices within a trial
Retest Savings
Performance improvement when retested on previously learned sequences
What is the RAPC?
The Repeated Acquisition and Performance Chamber automates assessment of spatial learning by requiring rodents to navigate interconnected compartments, choosing the correct door at each decision point. The acquisition phase uses a novel sequence each session while the performance phase uses a fixed sequence, enabling within-subject dissociation of new learning from established memory.
ConductVision integrates with RAPC's electronic sensors for automated error scoring across up to 16 simultaneously running chambers. RAPC is widely used in neurotoxicology, pharmacological screening, and aging research.
Protocol Parameters
| Parameter | Description | Default |
|---|---|---|
| Number of Chambers | Interconnected compartments in sequence | 3–4 |
| Chamber Size | Individual compartment dimensions | 30 × 25 × 25 cm |
| Door Type | Automated sliding doors at decision points | Motorized guillotine |
| Acquisition Sequence | Door sequence changes each session (novel learning) | Random per session |
| Performance Sequence | Fixed door sequence across sessions (established memory) | Constant |
| Trials per Session | Number of complete runs per session | 10–20 |
| Session Duration | Maximum time per session | 30 min |
| Reward | Food reward in the goal chamber | 45 mg sucrose pellet |
| Food Deprivation | Body weight maintained at | 85–90% free-feeding |
| ITI | Inter-trial interval | 10–15 s |
| Simultaneous Chambers | Number of RAPC units run in parallel | Up to 16 |
Interpreting Results
↑
Increased Acquisition Errors
Impaired new learning — failure to acquire novel sequences indicates hippocampal or prefrontal dysfunction.
↑
Elevated Performance Errors
Degraded established memory — errors on the fixed sequence suggest memory retrieval or consolidation deficit.
↓
Decreased Acquisition Rate
Slowed learning — flatter error reduction slope across trials, common in neurotoxicant exposure models (lead, mercury).
↑
Increased Perseverative Errors
Cognitive inflexibility — repeated incorrect choices at the same decision point indicate perseverative behavior.
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Selective Acquisition Impairment
Dissociation — acquisition errors increase while performance errors remain stable, indicating new learning deficit only.
↓
Reduced Performance Stability
Inconsistent retrieval — high error variance on the fixed sequence suggests unreliable memory access.
Research Applications
Neurotoxicology
- Heavy metal exposure — lead, mercury, and manganese effects on repeated acquisition learning
- Pesticide neurotoxicity — organophosphate and pyrethroid cognitive screening
- Solvent exposure — toluene and trichloroethylene dose-response learning curves
Pharmacology
- Drug safety screening — FDA-recommended behavioral endpoint for cognitive side-effects
- Cholinergic modulation — scopolamine impairment with acquisition-performance dissociation
- Stimulant effects — amphetamine and methylphenidate effects on response time and accuracy
Aging & Disease
- Age-related cognitive decline — within-subject learning-memory dissociation across lifespan
- Alzheimer's models — acquisition vs performance deficit profiles in transgenic mice
- High-throughput screening — up to 16 simultaneous chambers for large cohort studies
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