Shock Zone Entrances
Number of entries into the prohibited sector per trial
ConductVision · Behavioral Analysis
Active Place Avoidance
Rotating arena paradigm for spatial learning and cognitive coordination.
RodentSpatial MemoryAuto Export
ConductVision / Active Place Avoidance
Recording / Trial 3subject tracked
Entrances2.4
Max Avoidance310s
Path Length18.5m
Key Parameters
Metrics automatically extracted by ConductVision.
Time to First Entrance
Latency to first shock zone entry indexing spatial memory
Maximum Time Avoided
Longest continuous period successfully avoiding the zone
Number of Shocks
Total foot shocks reflecting avoidance failure frequency
Path Linearity
Straightness of escape trajectories from the shock zone
Distance Traveled
Cumulative path length accounting for arena rotation
+ 7 more parameters trackedShow allHide
Time per Quadrant
Dwell time distribution across room-frame quadrants
Opposite Sector Time
Duration in the sector diametrically opposite the shock zone
Shocks per Entrance
Average shock count per zone incursion
Escape Speed
Velocity during shock zone exit compared to baseline
Mean Distance from Zone
Average positional distance from the shock zone boundary
Rayleigh Vector Length
Directional concentration of position — avoidance strength
Path Efficiency
Actual vs ideal avoidance trajectory ratio
What is Active Place Avoidance?
The Active Place Avoidance test evaluates spatial learning by requiring rodents to avoid a stationary shock zone on a continuously rotating arena. The animal must integrate distal room cues while ignoring misleading local cues, making APA uniquely sensitive to hippocampal and prefrontal cognitive control.
ConductVision automates real-time position tracking on the rotating platform. Adjustable rotation speeds (0-5 RPM) and shock parameters allow researchers to titrate task difficulty for different species and experimental questions.
Protocol Parameters
| Parameter | Description | Default |
|---|---|---|
| Arena Diameter | Circular rotating platform size | 82 cm (rat) / 40 cm (mouse) |
| Rotation Speed | Platform angular velocity | 1 RPM |
| Shock Zone Angle | Angular width of the prohibited sector | 60° |
| Shock Intensity | Foot shock current | 0.5 mA (mouse) / 0.6 mA (rat) |
| Shock Duration | Duration of each shock pulse | 0.5 s |
| Inter-Shock Interval | Minimum time between successive shocks in zone | 1.5 s |
| Trial Duration | Length of each avoidance session | 10 min |
| Training Days | Acquisition training sessions | 3–5 days, 1 trial/day |
| Room Cues | Distal visual landmarks defining shock zone position | 4 high-contrast cues |
| Habituation | Free exploration on stationary arena before training | 5 min |
| Reversal | Shock zone relocated 180° to test cognitive flexibility | Post-acquisition |
Interpreting Results
↑
Increased Shock Zone Entrances
Impaired spatial avoidance — failure to form or maintain room-frame spatial map, common in hippocampal dysfunction and schizophrenia models.
↓
Decreased Maximum Time Avoided
Poor avoidance persistence — short maximum avoidance intervals indicate unstable spatial memory or attention lapses.
↑
Increased Shocks per Entrance
Failure to escape shock zone promptly — impaired escape learning or disorientation within the prohibited sector.
↓
Reduced Path Linearity
Disorganized escape trajectories — circuitous escape paths suggest impaired cognitive coordination of arena-frame and room-frame information.
↑
Elevated Reversal Errors
Cognitive inflexibility — perseverative avoidance of the old shock zone after 180° relocation, sensitive to prefrontal dysfunction.
↓
Reduced Rayleigh Vector Length
Dispersed positional preference — failure to concentrate position away from the shock zone indicates weak spatial memory.
Research Applications
Cognitive Coordination
- Hippocampal-prefrontal interaction — APA uniquely requires simultaneous use of conflicting spatial frames
- Schizophrenia models — MK-801 and neonatal ventral hippocampal lesion cognitive control deficits
- Epilepsy — cognitive comorbidities in kindling and pilocarpine models
Neurodegeneration
- Alzheimer's — early spatial learning deficits in APP/PS1 before MWM impairment emerges
- Aging — age-related decline in cognitive control more sensitive than simple spatial tasks
- TBI — post-injury cognitive coordination assessment on the rotating arena
Pharmacology
- Cognitive enhancers — ampakines, PDE4 inhibitors, and mGluR5 modulators
- Antipsychotic evaluation — cognitive side-effect profiling of typical vs atypical antipsychotics
- Neural oscillation — theta and gamma coherence correlates of avoidance performance
Compatible Equipment
Related paradigms
Continue with rodents analysis
RodentSpatial Memory
Barnes Maze
Track escape latency, search strategy, and head direction with automated analysis.
RodentAnxiety
Elevated Plus Maze
Measure anxiety-like behavior through open vs. closed arm exploration.
RodentSpatial Learning
Morris Water Maze
Gold-standard spatial learning and memory test with automated swim tracking.
RodentLocomotion
Open Field Analysis
Track locomotion, anxiety, and exploration in a novel open arena.
RodentAnxiety
Light/Dark Box Test
Assess anxiety through light vs. dark compartment preference with IR tracking.
RodentWorking Memory
T-Maze
Evaluate working memory and decision-making via spontaneous alternation.
Ready to automate your behavioral analysis?
Request a demo or contact our team to discuss how ConductVision can accelerate your research.
