Spontaneous Alternation
Percentage of successive arm entries using all three arms
ConductVision · Behavioral Analysis
Y-Maze
Assess spatial working memory through spontaneous alternation in a three-arm maze.
RodentWorking MemoryAuto Export
ConductVision / Y-Maze
Recording / Trial 3subject tracked
Alternation68%
Arm Entries22
Distance8.4m
Key Parameters
Metrics automatically extracted by ConductVision.
Total Arm Entries
Count of entries into any arm as a locomotion index
Distance Traveled
Total path length across the trial
Arm Dwell Time
Time spent in each arm per entry
Decision Latency
Time at the center before committing to an arm
Velocity
Movement speed within and between arms
+ 6 more parameters trackedShow allHide
Same Arm Returns
Consecutive re-entries into the same arm without visiting another
Alternation Triplets
Count of overlapping triads meeting alternation criteria
Arm Preference
Visit proportion per arm detecting spatial bias
Turn Bias
Laterality preference for left vs right arm choices
First Arm Choice
Which arm is entered first from the start position
Immobility
Total time spent immobile during the session
What is the Y-Maze?
The Y-Maze is a widely used test for spatial working memory in rodents. The animal is placed in a symmetrical three-arm maze and allowed to explore freely. Healthy animals display spontaneous alternation — visiting a novel arm on successive choices — reflecting intact hippocampal working memory.
ConductVision automates arm entry detection and alternation scoring, eliminating manual counting errors. The software outputs alternation rates, arm visit sequences, and locomotion metrics for efficient analysis across large cohorts.
Protocol Parameters
| Parameter | Description | Default |
|---|---|---|
| Arm Length | Length of each arm | 35 cm (mouse) / 50 cm (rat) |
| Arm Width | Width of each arm | 5 cm (mouse) / 10 cm (rat) |
| Wall Height | Height of arm walls | 12 cm (mouse) / 20 cm (rat) |
| Arm Angle | Angle between arms | 120° |
| Test Duration | Standard free exploration session | 5–8 min |
| Arm Entry Definition | Criterion for arm entry | All four paws in arm |
| Minimum Entries | Minimum arm entries for valid alternation scoring | ≥ 10 |
| Start Arm | Arm where animal is placed at trial start | Consistent across subjects |
| Light Intensity | Overhead illumination | 200–300 lux |
| Habituation | Room acclimation before testing | 30–60 min |
| Cleaning | Maze cleaning between subjects | 70% ethanol |
Interpreting Results
↓
Decreased Alternation Rate
Working memory impairment — alternation below 50% (chance) seen after scopolamine (1 mg/kg), hippocampal lesions, and MK-801.
↓
Reduced Total Arm Entries
Hypolocomotion — fewer than 10 entries invalidates alternation scoring; check for sedation or motor deficits.
↑
Increased Same Arm Returns
Perseverative behavior — repeated re-entries suggest prefrontal dysfunction or compulsive responding.
↑
Elevated Turn Bias
Lateralized preference — strong left or right bias indicates striatal asymmetry or habitual responding overriding spatial memory.
↓
Reduced Novel Arm Time (2-Trial)
Impaired recognition memory — in the two-trial variant, low novel arm exploration indicates failure to remember the blocked arm.
↑
Enhanced Alternation after Treatment
Cognitive enhancement — donepezil, modafinil, or PDE4 inhibitors can boost alternation above vehicle control.
Research Applications
Working Memory Screening
- Rapid cognitive screen — single-session spontaneous alternation with no training required
- Scopolamine model — cholinergic impairment and rescue with AChE inhibitors
- NMDA antagonist model — MK-801 and PCP working memory disruption
Neurodegeneration & Aging
- Alzheimer's models — early alternation deficits in APP/PS1 and 3xTg mice
- Aging — spontaneous alternation decline as a non-invasive cognitive aging biomarker
- Tauopathy — PS19 and rTg4510 progressive working memory deficits
High-Throughput Phenotyping
- Mutant mouse screening — rapid spatial cognition assessment for large cohorts
- Drug discovery — first-pass cognitive screening before advanced maze testing
- Strain comparisons — baseline alternation rates across C57BL/6, BALB/c, 129S substrains
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.
