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Mouse Y-Maze
Three 120-degree arms, removable inserts, overhead tracking compatible
Standard spontaneous alternation and novel-arm recognition apparatus for mice.
$1,190
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Y Maze
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Three-arm behavioral maze with 120-degree arm angles for assessing spatial working memory and spontaneous alternation in mice and rats.
Key Specifications
| arm_angle | 120 degrees |
| food_well_depth | 1cm |
| escape_tube_diameter_mouse | 4cm |
| escape_tube_diameter_rat | 8cm |
| escape_tubes_quantity | 3x tubes |
| stand_height_mouse | 32cm |
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Our Staff are PhD Scientists
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Louise Corscadden
PhD, Neuroscience
The Y Maze is a three-arm behavioral testing apparatus designed for evaluating spatial working memory and spontaneous alternation behavior in rodents. Each arm extends at 120-degree angles from a central junction, creating a symmetrical configuration that reduces the sharp directional changes found in T-maze designs. This gradual turn architecture decreases learning time and allows for more natural locomotor patterns during behavioral assessment.
Available in mouse and rat configurations, the Y Maze incorporates 1cm deep food wells that can be positioned in one, two, or all three arms for rewarded alternation paradigms. The apparatus serves as a primary tool for assessing reference memory, working memory, and exploratory behavior patterns in neurobehavioral research. The maze's compact design minimizes degrees of freedom, focusing animal attention on the spatial memory task while maintaining sufficient space for natural movement patterns.
How It Works
The Y Maze operates on the principle that rodents exhibit an innate tendency for spontaneous alternation, preferentially exploring arms that differ from their previous choice. This behavioral pattern reflects the function of spatial working memory, primarily mediated by hippocampal circuits. Animals naturally alternate between arms to maximize exploration efficiency, creating a measurable behavioral readout of cognitive function.
During testing, rodents are placed in the central junction and allowed to freely explore all three arms. The sequence of arm entries is recorded, with alternation defined as consecutive choices of three different arms. Normal animals typically demonstrate alternation rates of 60-80%, while cognitive impairment results in reduced alternation percentages. The 120-degree arm configuration facilitates natural movement patterns and reduces the spatial complexity compared to sharper-angled maze designs.
For rewarded alternation paradigms, food wells positioned in specific arms create reinforcement contingencies that assess reference memory formation. Animals must learn and retain spatial associations between arm locations and reward availability, providing complementary measures of both working and reference memory systems.
Features & Benefits
120-degree arm angles
Reduces learning time compared to T-maze sharp turns while maintaining spatial memory assessment validity
Species-specific dimensions
Optimized arm width and length ratios for natural mouse (5cm width) and rat (10cm width) locomotion patterns
1cm deep food wells
Standardized reinforcement delivery for rewarded alternation protocols with consistent pellet accessibility
Configurable food well placement
Flexible experimental design allowing reinforcement in one, two, or all three arms depending on protocol requirements
Compact three-arm design
Minimizes degrees of freedom to focus animal attention on spatial memory task while reducing maze complexity
Available escape tube modification
Enables stress-reduction protocols with 4cm (mouse) or 8cm (rat) diameter tubes for anxiety-sensitive studies
Optional cue light system
Supports visual discrimination tasks with fluorescent white, blue, red, or IR illumination options
Modular stand system
Elevates maze to appropriate working height (32cm mouse, 45cm rat) for improved observation and video recording
arm_angle
- 120 degrees
food_well_depth
- 1cm
escape_tube_diameter_mouse
- 4cm
escape_tube_diameter_rat
- 8cm
escape_tubes_quantity
- 3x tubes
stand_height_mouse
- 32cm
stand_height_rat
- 45cm
backlight_colors
- ['fluorescent white', 'blue', 'red', 'IR']
cue_lights_quantity
- 3x
food_wells_options
- 1, 2, or 3 arms
Size
- Mouse
- Rat
Behavioral Construct
- spatial working memory
- spontaneous alternation
- reference memory
- exploratory behavior
- spatial navigation
Automation Level
- manual
Species
- Mouse
- Rat
Research Domain
- Aging Research
- Anxiety and Depression
- Behavioral Pharmacology
- Learning and Memory
- Neurodegeneration
- Neuroscience
- Toxicology
Weight
- 13.6 kg
Dimensions
- L: 104.0 mm
- W: 91.4 mm
- H: 10.2 mm
Comparison Guide
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Arm Configuration | Three arms at 120-degree angles | T-mazes use 90-degree angles with sharper directional changes | Gradual turns reduce learning complexity while maintaining spatial memory assessment validity |
| Food Well Depth | Standardized 1cm depth across all configurations | Varies by model with inconsistent reinforcement delivery | Ensures consistent pellet accessibility and prevents excessive digging behaviors |
| Species Optimization | Dedicated mouse and rat configurations with species-specific dimensions | Single-size designs often compromise locomotion for one species | Optimized arm ratios accommodate natural movement patterns for both species |
| Food Well Flexibility | Configurable placement in 1, 2, or 3 arms | Fixed well positions limit experimental design options | Supports diverse reinforcement paradigms from simple to complex spatial associations |
| Modification Options | Escape tubes, cue lights, and stand system available | Limited accessory options restrict protocol adaptability | Enables stress-reduction and visual discrimination protocols within same apparatus |
| Maze Complexity | Compact three-arm design with limited choice points | Radial arm mazes offer more arms but require extensive training | Focuses attention on spatial memory task while reducing training time requirements |
The Y Maze provides an optimal balance of spatial complexity and learning efficiency through its 120-degree arm configuration and species-specific dimensions. The standardized food well system and available modifications support diverse experimental protocols while maintaining behavioral assessment validity.
Neuroscience
Assessment of hippocampal function through spontaneous alternation testing, measuring the tendency of rodents to explore previously unvisited arms.
Behavioral Pharmacology
Evaluation of cognitive-enhancing or impairing effects of pharmaceutical compounds on spatial working memory performance.
Learning and Memory
Investigation of reference memory formation using rewarded alternation protocols with food reinforcement in designated arms.
Neurodegeneration
Monitoring progressive cognitive decline in transgenic models of Alzheimer's disease and other neurodegenerative conditions.
Aging Research
Characterization of age-related changes in spatial memory capacity and alternation behavior patterns across different life stages.
Toxicology
Detection of neurotoxic effects on cognitive function through alterations in spontaneous alternation rates and exploration patterns.
Practical Tips
Calibration
Verify arm dimensions accommodate normal locomotion by conducting trial runs with representative animals before beginning formal testing.
Why: Ensures maze dimensions support natural movement patterns and prevent size-related behavioral artifacts.
Maintenance
Inspect food wells daily for debris accumulation and ensure 1cm depth remains consistent across all testing positions.
Why: Maintains standardized reinforcement delivery and prevents feeding-related behavioral confounds.
Best Practices
Allow animals 2-3 minutes of initial exploration before beginning formal scoring to reduce novelty-related behaviors.
Why: Separates exploratory responses from spatial memory assessment and improves data reliability.
Troubleshooting
If alternation rates fall below expected ranges, verify cleaning protocols eliminate olfactory cues from previous subjects.
Why: Residual scent marks can bias arm preference and mask true spatial memory performance.
Data Quality
Score arm entries only when all four paws cross the arm threshold to maintain consistent behavioral criteria.
Why: Standardized entry definitions reduce scorer variability and improve inter-study comparability.
Safety
Monitor animals continuously during testing and verify escape tube accessibility if using stress-reduction modifications.
Why: Prevents potential injury from falls or entrapment while maintaining animal welfare standards.
Best Practices
Counterbalance starting arm placement across subjects to eliminate position bias effects on alternation patterns.
Why: Controls for potential apparatus asymmetries and strengthens statistical power of spatial memory measures.
Data Quality
Record total arm entries in addition to alternation percentage to assess general activity levels and detect mobility confounds.
Why: Distinguishes between memory impairment and locomotor dysfunction that could affect behavioral interpretation.
Setup Guide
Unpack and Inspect
Remove maze components from packaging and inspect all surfaces for damage or defects that could affect animal behavior.
Surface Preparation
Clean all maze surfaces with 70% ethanol and allow to dry completely to remove shipping residues and establish consistent odor conditions.
Environmental Setup
Position maze in testing room with consistent lighting and minimal external visual cues that could influence spatial navigation.
Food Well Configuration
If using rewarded alternation, place food pellets in designated wells according to experimental protocol and verify 1cm depth.
Recording System Setup
Configure video recording or manual scoring system to capture arm entries and movement patterns from appropriate viewing angle.
Calibration Trial
Conduct initial trial with test animal to verify arm dimensions accommodate normal locomotion and confirm recording system captures all relevant behaviors.
Inter-Trial Cleaning
Establish protocol for cleaning maze between subjects using consistent cleaning solution to eliminate olfactory cues from previous animals.
What’s in the Box
- Y Maze apparatus (three-arm configuration)
- Food wells (standard 1cm depth)
- Assembly hardware (typical)
- User manual and protocol guide (typical)
- Cleaning and maintenance instructions (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, with technical support for setup and operational guidance.
Compliance
IACUC GuidelinesY Maze testing protocols are commonly evaluated under institutional animal care and use committee oversight for behavioral research approval
ARRIVE GuidelinesSpatial memory testing procedures using Y Maze apparatus support standardized reporting requirements for animal research publications
References
Background reading relevant to this product:
1.Charles V. Vorhees et al. (2006) “Morris water maze: procedures for assessing spatial and related forms of learning and memory” Nature Protocols doi:10.1038/nprot.2006.116
2.Rudi D'Hooge et al. (2001) “Applications of the Morris water maze in the study of learning and memory” Brain Research Reviews doi:10.1016/s0165-0173(01)00067-4
3.Herbert Schwegler et al. (1990) “Hippocampal mossy fibers and radial-maze learning in the mouse: A correlation with spatial working memory but not with non-spatial reference memory” Neuroscience doi:10.1016/0306-4522(90)90139-u
4.Kinga Gaweł et al. (2018) “Assessment of spatial learning and memory in the Barnes maze task in rodents—methodological consideration” Naunyn-Schmiedeberg s Archives of Pharmacology doi:10.1007/s00210-018-1589-y
Q
What is the Y-Maze?
A
The Y-Maze is a three-armed behavioral apparatus used to assess spatial working memory and exploratory behavior in rodents through spontaneous alternation or novel arm recognition paradigms.
Q
How does the Y-Maze work?
A
In spontaneous alternation, rodents freely explore all three arms; a tendency to enter a previously unvisited arm indicates intact working memory. In the novel arm test, one arm is blocked during training and opened during testing to measure recognition memory.
Q
What research applications use the Y-Maze?
A
The Y-Maze is used for rapid assessment of cognitive deficits in Alzheimer's, aging, and drug efficacy studies. Its simplicity and short protocol make it ideal for high-throughput screening of cognitive function.
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Accessories
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Upgrade Options
Use this apparatus with
The complete Y-Maze workflow
Track arm entries
Automate arm entries, alternation sequences, dwell time, and zone transitions from overhead video.
ConductVision Y-Maze →Run alternation protocol
Spontaneous alternation, forced alternation, novel-arm recognition, and continuous alternation workflows.
ConductMaze Y-Maze Protocol →Calculate alternation
Free calculator for spontaneous alternation percentage from arm-entry sequences.
Y-Maze Alternation Calculator →Choose your configuration
Validated Y-Maze configurations
Pick the apparatus configuration that matches the cohort, species, and protocol. Species-specific adaptations should be interpreted within their own validation literature.
BuyableRat standard
Rat Y-Maze
Scaled arms for adult rats with optional guillotine doors
Used for spontaneous alternation, forced alternation, and spatial recognition tasks in rats.
$1,390
SpecialtyAutomated
Automated Y-Maze
Door control, sensors, TTL triggers, and software integration
For forced alternation and delayed non-match protocols requiring controlled access to arms.
$2,490
View automated ->§ 1
Introduction
The Y-Maze is a three-arm spatial working-memory apparatus that exploits rodents natural tendency to investigate a less recently visited arm. Spontaneous alternation requires no explicit training, making it a rapid screen for hippocampal and prefrontal working-memory function. 1
The same apparatus supports several distinct protocols: spontaneous alternation, forced alternation, novel-arm recognition, and continuous alternation. These should be named explicitly because each protocol has different memory load, training burden, and door-control requirements. 1
Y-Maze outcomes are strongly affected by total activity. A low alternation score is difficult to interpret if the animal makes too few arm entries, so entry count and session duration should be reported with alternation percentage. 1
§ 2
Methods
2.1 Procedure
Spontaneous alternation: one free-exploration session, usually 5 to 8 minutes.
Pre-test setup
- 1.Arm labeling — Label arms A, B, and C. Keep spatial cues fixed around the maze.
- 2.Zone definition — Define arm entry thresholds consistently, usually all four paws inside an arm.
- 3.Lighting — Use even low-to-moderate illumination to support exploration without excessive avoidance.
- 4.Door check — For forced or novel-arm protocols, verify doors open and close silently and fully.
Trial sequence
- 1.Place subject — Start the animal in the center zone facing the same arm orientation or a counterbalanced orientation.
- 2.Record exploration — Allow free exploration for the defined duration, commonly 5 to 8 minutes for spontaneous alternation.1
- 3.Score entries — Count a valid entry only after the full body or all four paws cross the threshold.
- 4.Compute triads — Score every overlapping set of three consecutive entries as alternating when all three arms are represented.
- 5.Clean maze — Clean arms and center zone between subjects.
Critical methodological constraints
- Minimum activity. Sessions with very low arm entries should be flagged or excluded by pre-defined criteria because alternation percentage becomes unstable.3
- Protocol naming. Do not mix spontaneous alternation with forced alternation or novel-arm recognition in analysis tables.
- Door effects. Door sounds and handling during forced-alternation phases can alter exploration. Keep timing and handling identical across groups.
- Side bias. Persistent preference for one arm can reduce alternation independent of memory. Report arm occupancy when bias appears.
2.2 Measurement & Analysis
Core Y-Maze metrics ConductVision scores from arm-entry sequences.
Spontaneous Alternation
Working-memory index
Percent of overlapping three-entry sequences that include all three arms.1
Total Arm Entries
Activity control
Total valid arm entries. Low counts make alternation percentage unreliable.3
Arm Dwell Time
Preference and bias
Time in each arm, used to detect side bias or avoidance of a specific arm.
Novel Arm Time
Recognition memory
Time spent in the previously blocked arm during novel-arm recognition protocols.
Center Time
Decision behavior
Time in the center choice zone, often increased when animals hesitate or show low exploration.
+ Additional metrics: alternation by time bin, repeated-arm errors, latency to first arm, arm-entry sequence, velocity, and inactivity.
2.3 spontaneous alternation percentage (analysis)
Successful triads divided by all possible triads.
§ 3
Results
Aggregate publication data, sample apparatus output, and recent findings from the live PubMed feed.
3.1 Publication trends
PubMed volume and co-occurring methods for spatial working-memory assays.
3.2 Sample apparatus output
Representative arm-entry sequence summary from spontaneous alternation.
3.3 Recent findings (live PubMed feed)
- May 2026PMID: 41806956
Chemogenetic inhibition of developmentally-born hippocampal neurons but not loss of adult neurogenesis impairs spatial working memory in the rat.
Ward MD, Snyder JS, Seib DR. Behav Brain Res. 2026 May 28.
The dentate gyrus (DG) of the hippocampus contains a heterogeneous population of granule cells, being comprised of neurons generated during both development and adulthood.
- May 2026PMID: 41961641
Effects of ononin on cognitive and learning-memory functions in mild cognitive impairment.
Yang L, Zhao W, Zhao J, et al.. Neuroreport. 2026 May 13.
This study aimed to investigate the potential of ononin in alleviating mild cognitive impairment (MCI) and to determine whether its effects depend on the functional recovery of neurons in the nucleus tractus solitarius (NTS).
- May 2026PMID: 41707874
Lactate restores PGC1α and BDNF expression rescuing cognitive impairments in a mouse model for schizophrenia.
Kambali M, Wang M, Nagarajan R, et al.. Behav Brain Res. 2026 May 8.
Disruption of metabolic interactions between astrocytes and neurons, in particular of the lactate shuttle, may contribute to neurodevelopmental and psychiatric disorders such as autism spectrum disorder (ASD) and schizophrenia.
- Apr 2026PMID: 41955866
Synergistic effect of 5-HTreceptor activation and phosphodiesterase type 7 inhibition on object recognition and working memory performances in adult mice.
Le Ridant DC, Freret T, Boulouard M, et al.. Eur J Pharmacol. 2026 Apr 28.
Low-dose multitarget pharmacological strategies are viewed as promising approaches for managing cognitive impairment in aging. Here, we assessed the preclinical efficacy of co-modulating the 5-HTreceptor-dependent cAMP pathway to improve memory.
§ 4
Discussion
Limitations of the paradigm, methodological caveats, and current directions.
4.1 Common confounds
Variables that shift Y-Maze results independent of anxiety state.
Low activity
Alternation percentage is unstable when animals make too few entries.3
Arm bias
Preference or avoidance of one arm can reduce alternation independent of working memory.
Protocol mixing
Spontaneous alternation, forced alternation, and novel-arm recognition should be analyzed separately.
Door and delay timing
Forced and novel-arm protocols depend on consistent door timing and retention interval.
Cue instability
Moving external cues changes the spatial frame and can impair recognition performance.
4.2 Construct validity caveats
Y-Maze spontaneous alternation is fast and low stress, but it is sensitive to locomotor activity and exploratory drive. 1 Strong interpretation requires enough entries, balanced arm occupancy, and protocol-specific endpoints rather than alternation percentage alone. 2
4.3 Special considerations
What is the minimum number of entries?
Use a pre-defined threshold appropriate to session length and species. Very low entry counts make the denominator too small for reliable alternation estimates.
Can the same maze run forced alternation?
Yes, if it has removable doors or inserts and the protocol defines sample phase, delay, and choice phase separately.
How does Y-Maze differ from T-Maze?
Y-Maze spontaneous alternation is free exploration, while many T-Maze protocols use discrete forced-choice trials with reward or rule structure.
4.4 Current directions
Quarterly editorial review of emerging Y-Maze methodology. Q2 2026
Rising
Time-binned alternation curves
Extended sessions increasingly report alternation decay over time instead of one whole-session percentage.
Methodological
Entry-threshold standardization
Automated full-body threshold rules are reducing scorer variation in arm-entry calls.
Rising
Rapid disease-model screens
Y-Maze remains a common first-pass working-memory screen in AD, stroke, TBI, and pharmacology batteries.
Methodological
Door-controlled protocols
Automated doors are making forced alternation and novel-arm recognition more reproducible.
§ 5
References
6 curated Y-Maze methods and validation papers. Schema-marked as ScholarlyArticle ItemList.
- Hughes RN. The value of spontaneous alternation behavior (SAB) as a test of retention in pharmacological investigations of memory. Neurosci Biobehav Rev. 2004;28(5):497-505.
- Dellu F, Mayo W, Cherkaoui J, Le Moal M, Simon H. A two-trial memory task with automated recording: study in young and aged rats. Brain Res. 1992;588(1):132-139.
- Lalonde R. The neurobiological basis of spontaneous alternation. Neurosci Biobehav Rev. 2002;26(1):91-104.
- Dudchenko PA. An overview of the tasks used to test working memory in rodents. Neurosci Biobehav Rev. 2004;28(7):699-709.
- Conrad CD, Galea LA, Kuroda Y, McEwen BS. Chronic stress impairs rat spatial memory on the Y maze, and this effect is blocked by tianeptine pretreatment. Behav Neurosci. 1996;110(6):1321-1334.
- Holcomb L, Gordon MN, McGowan E, et al. Accelerated Alzheimer-type phenotype in transgenic mice carrying both mutant amyloid precursor protein and presenilin 1 transgenes. Nat Med. 1998;4(1):97-100.
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