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Light/Dark Box
Two-compartment chamber with controlled bright and dark zones
anxiety-like conflict testing between protected dark occupancy and bright-zone exploration.
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Light Dark Box
SKU ME-4101/ME-4102
In Stock — ships now$1,590.00
IncludesStandard care
Behavioral testing apparatus for assessing anxiety-like behavior and exploratory tendencies in rodents through light-dark preference paradigm.
CE MarkedBAA available
Scientist guidance
Louise Corscadden, PhD
Director of Science · ConductScience
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Key Specifications
Full details →- Model fit
- Mouse, Rat
- SKU family
- ME-4101/ME-4102
- Sizing
- 43.2 x 38.0 x 27.9 cm
- Ordering
- Online checkout and quote request available
- Category
- Anxiety & Depression Tests
- Build notes
- Confirm accessories, station layout, and support needs before purchase
The Light Dark Box is a behavioral testing apparatus designed to assess anxiety-like behavior and exploratory tendencies in rodents. This standardized paradigm exploits the natural conflict between a rodent's innate drive to explore novel environments and its aversion to brightly illuminated open spaces. The apparatus consists of two connected chambers with contrasting lighting conditions, allowing researchers to quantify approach-avoidance behaviors, thigmotaxis, and locomotor activity patterns.
Available in species-specific configurations for mice and rats, the system features an IR-permeable dark chamber that enables video tracking and behavioral analysis while maintaining the chamber's perceived darkness to the test subject. The acrylic construction provides durability and ease of decontamination between test sessions, making it suitable for high-throughput behavioral phenotyping studies. The apparatus supports both acute pharmacological interventions and chronic behavioral assessments in neuroscience and behavioral pharmacology research.
How It Works
The Light Dark Box test exploits the natural behavioral conflict in rodents between exploratory drive and aversion to open, brightly illuminated spaces. Rodents exhibit an innate preference for dark, enclosed environments while simultaneously displaying exploratory behavior toward novel areas. This paradigm creates an approach-avoidance conflict that manifests as measurable behavioral parameters including time spent in each chamber, transition frequency, and locomotor activity patterns.
The apparatus features an IR-permeable dark chamber that appears dark to the rodent while allowing infrared video tracking systems to record behavior. Test subjects are typically placed in the dark chamber initially and allowed free access to both compartments. Anxiety-like behavior is characterized by reduced time in the light chamber, fewer transitions between chambers, and increased thigmotactic behavior (wall-following) in the light compartment. The standardized chamber dimensions and door size ensure consistent testing conditions across studies.
Behavioral endpoints are quantified through automated video tracking or manual scoring, with typical measures including latency to first light chamber entry, total time spent in each chamber, number of transitions, rearing behavior, and locomotor activity. The test duration is typically 5-10 minutes, with data analysis focusing on the proportion of time and activity in each chamber relative to baseline exploratory behavior.
Features & Benefits
Species-specific chamber dimensions
Optimized chamber sizes for mouse (17.5x40cm dark, 25x40cm light) and rat (20x40cm dark, 30x40cm light) ensure appropriate spatial relationships for natural behavioral expression.
IR-permeable dark chamber
Enables complete video tracking and automated behavioral analysis while maintaining the chamber's perceived darkness to the test subject.
Acrylic construction
Provides durability, optical clarity for observation, and compatibility with standard laboratory cleaning protocols including 70% ethanol decontamination.
Matte finish surface treatment
Eliminates reflective glare that could interfere with video tracking accuracy and reduces visual artifacts during behavioral recording.
Standardized connecting door
Species-appropriate door dimensions (5cm for mice, 10cm for rats) ensure natural transition behavior while maintaining chamber separation.
Odor-resistant materials
Prevents accumulation of olfactory cues between test sessions that could influence subsequent animal behavior and confound experimental results.
Easy decontamination protocol
Simple cleaning with 70% ethanol between subjects minimizes cross-contamination and maintains consistent testing conditions across experimental sessions.
Weight
- 21.0 kg
Dimensions
- L: 43.2 mm
- W: 38.0 mm
- H: 27.9 mm
| Feature | This Product | Typical Alternative | Advantage |
|---|---|---|---|
| Chamber Configuration | Species-specific optimized dimensions with 17.5x40cm dark and 25x40cm light chambers for mice, 20x40cm dark and 30x40cm light for rats | Standard models often use fixed dimensions regardless of species | Ensures appropriate spatial relationships for natural behavioral expression in each species |
| Dark Chamber Design | IR-permeable dark chamber allowing complete video tracking while maintaining perceived darkness | Basic dark chambers may compromise either tracking capability or light-dark contrast | Enables automated behavioral analysis without sacrificing paradigm validity |
| Surface Treatment | Matte finish to eliminate reflective glare | Standard acrylic often has glossy surfaces that can interfere with tracking | Improves video tracking accuracy and reduces visual artifacts during recording |
| Construction Material | Odor-resistant acrylic with easy ethanol cleaning compatibility | Some models use materials that retain odors or require specialized cleaning | Prevents olfactory contamination between test sessions that could confound results |
This Light Dark Box offers species-optimized chamber dimensions, IR-permeable dark chamber design for complete behavioral tracking, and odor-resistant construction with standardized cleaning protocols. The matte surface treatment and durable acrylic construction support high-throughput behavioral studies with consistent reproducibility.
| Model | SKU | Listed price | Status | Dimensions |
|---|---|---|---|---|
| Rat | ME-4101/ME-4102 | $1,590.00 | Available | 43.2 x 38.0 x 27.9 cm |
| Mouse | ME-4101/ME-4102 | $1,290.00 | Available | 43.2 x 38.0 x 27.9 cm |
| Product model | ME-4101/ME-4102 | $1,890.00 | Available | 43.2 x 38.0 x 27.9 cm |
| Rat | ME-4102 | $1,590.00 | Available | 63.5 x 50.8 x 12.7 cm |
| Mouse | ME-4101 | $1,290.00 | Available | 53.34 x 50.8 x 12.7 cm |
Neuroscience
Evaluating anxiety-like phenotypes in transgenic mouse models of neuropsychiatric disorders and assessing the behavioral effects of genetic modifications on exploratory behavior.
Behavioral Pharmacology
Screening potential anxiolytic compounds by measuring changes in light chamber exploration time and transition frequency between chambers following drug administration.
Toxicology
Assessing neurobehavioral toxicity of chemical exposures by quantifying alterations in anxiety-like behavior and exploratory patterns in exposed versus control animals.
Anxiety and Depression
Characterizing anxiety-like behavioral responses in animal models of mood disorders and evaluating the efficacy of therapeutic interventions on approach-avoidance behaviors.
Learning and Memory
Investigating the relationship between emotional state and cognitive performance by assessing anxiety levels prior to or following learning and memory tasks.
Addiction Research
Examining anxiety-related behaviors during drug withdrawal periods and assessing how substance exposure affects exploratory behavior and stress responses.
Practical Tips
Calibration
Verify light chamber illumination levels regularly using a calibrated lux meter to maintain consistent 400-1000 lux lighting conditions.
Why: Consistent lighting conditions are critical for reproducible anxiety-related behavioral responses across test sessions.
Maintenance
Inspect the connecting door mechanism weekly to ensure smooth operation and proper alignment between chambers.
Why: Door functionality affects natural transition behavior and can introduce artifacts if animals hesitate due to mechanical issues.
Best Practices
Place test subjects initially in the dark chamber and allow a 30-second acclimation period before beginning behavioral recording.
Why: Initial dark chamber placement provides a standardized starting condition and reduces variability in first light chamber exploration latency.
Troubleshooting
If animals show excessive freezing behavior, reduce ambient noise levels and ensure the testing room is isolated from laboratory traffic.
Why: External disturbances can overwhelm the light-dark behavioral paradigm and lead to non-specific anxiety responses.
Data Quality
Record baseline locomotor activity in the dark chamber during the first minute to normalize subsequent behavioral measures.
Why: Individual differences in general activity levels can be factored out to better isolate anxiety-specific behavioral changes.
Safety
Ensure all acrylic edges are smooth and free of sharp corners that could potentially injure test subjects.
Why: Animal welfare requirements and potential injury artifacts that could confound behavioral measurements.
Best Practices
Standardize the time of day for testing sessions to account for circadian influences on anxiety-related behaviors.
Why: Rodent activity patterns and stress hormone levels vary throughout the light-dark cycle, affecting behavioral responses.
Data Quality
Monitor for habituation effects by tracking behavior changes across repeated testing sessions in longitudinal studies.
Why: Repeated exposure to the apparatus can reduce anxiety responses and affect the validity of chronic treatment assessments.
Setup Guide
Unpack and Inspect Components
Remove the light dark box components from packaging and verify all acrylic panels and connecting hardware are present and undamaged.
Assemble Chamber System
Connect the light and dark chambers according to the species-specific dimensions, ensuring the connecting door is properly aligned and opens freely.
Position and Secure Apparatus
Place the assembled apparatus on a stable, vibration-free surface in a quiet testing room away from external disturbances and ensure proper lighting over the light chamber.
Configure Lighting System
Set up appropriate lighting over the light chamber (typically 400-1000 lux) while maintaining minimal illumination in the dark chamber to preserve the light-dark contrast.
Install Video Tracking
Position infrared-capable cameras to capture behavior in both chambers, taking advantage of the IR-permeable dark chamber design for complete behavioral monitoring.
Calibrate Tracking Software
Configure video tracking software to recognize chamber boundaries, track animal position, and automatically score behavioral parameters including transitions and time spent in each zone.
Perform System Validation
Run test trials with control animals to verify consistent behavioral responses and validate data collection parameters before beginning experimental studies.
What’s in the Box
- Light Dark Box apparatus (species-specific configuration)
- Acrylic chamber components
- Assembly hardware and connectors
- User manual and setup instructions (typical)
- Cleaning and maintenance guidelines (typical)
Warranty
ConductScience provides a standard one-year manufacturer warranty covering defects in materials and workmanship, with technical support available for setup and operational guidance.
Compliance
ARRIVE GuidelinesSupports standardized reporting of animal behavior studies through consistent apparatus design and methodology.
NIH Guidelines for Care and Use of Laboratory AnimalsCommonly used in behavioral studies conducted under institutional animal care protocols and IACUC oversight.
Good Laboratory Practice (GLP)Supports regulatory toxicology studies requiring standardized behavioral assessment procedures and equipment validation.
References
Background reading relevant to this product:
1.Michel Bourin et al. (2003) “The mouse light/dark box test” European Journal of Pharmacology doi:10.1016/s0014-2999(03)01274-3
2.Natalia Kulesskaya et al. (2014) “Assessment of mouse anxiety-like behavior in the light–dark box and open-field arena: Role of equipment and procedure” Physiology & Behavior doi:10.1016/j.physbeh.2014.05.006
3.André Ramos et al. (2008) “Integrating the open field, elevated plus maze and light/dark box to assess different types of emotional behaviors in one single trial” Behavioural Brain Research doi:10.1016/j.bbr.2008.06.007
4.András Bilkei‐Gorzó et al. (1998) “mCPP-induced anxiety in the light-dark box in rats - a new method for screening anxiolytic activity” Psychopharmacology doi:10.1007/s002130050568
5.Stephanie M. Miller et al. (2011) “Use of the light–dark box to compare the anxiety-related behavior of virgin and postpartum female rats” Pharmacology Biochemistry and Behavior doi:10.1016/j.pbb.2011.08.002
Q
What is the Light Dark Box?
A
The Light Dark Box is a two-compartment behavioral apparatus used to measure anxiety-like behavior based on the innate aversion of rodents to brightly illuminated areas and their exploratory drive.
Q
How does the Light Dark Box work?
A
The apparatus has a brightly lit compartment connected to a dark enclosed compartment. Rodents freely move between them. Latency to enter the light side, time spent in light, and number of transitions quantify anxiety levels.
Q
What research applications use the Light Dark Box?
A
The Light Dark Box is used for rapid anxiolytic drug screening, phenotyping of transgenic mouse lines, and studies of light-aversion in migraine models. Its simplicity makes it ideal for high-throughput behavioral testing.
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Use this apparatus with
The complete Light/Dark Box workflow
Track behavior
Automate light-zone time, latency, zone occupancy, path order, and event timing for Light/Dark Box studies.
ConductVision Light/Dark Box ->Run protocol
Stepwise light-dark transition setup, trial timing, exclusion rules, and reporting checkpoints.
ConductMaze Light/Dark Box Protocol ->Analyze output
Summarize light-zone time, group differences, and quality-control flags before export.
Light/Dark Box Calculator ->Configuration considerations
Common Light/Dark Box setup decisions
Use these notes to scope species, cohort, tracking, and automation needs. Only verified product or support routes are linked from this section.
BuyableScaled option
Light/Dark Box Species Variant
Mouse, rat, aquatic, insect, or large-animal scaling as appropriate
Use species-specific dimensions and lighting so the apparatus tests the intended construct instead of body size, visibility, or handling tolerance.
Quote
View options ->SpecialtyAutomation
Light/Dark Box With Tracking
Camera, gates, sensors, cue control, or event logging as required
Best when the protocol needs reproducible timing, high-throughput scoring, or defensible endpoint extraction across cohorts.
Quote
Configure tracking ->§ 1
Introduction
The Light/Dark Box is a anxiety assay built around anxiety-like conflict testing between protected dark occupancy and bright-zone exploration. Interpretable data depend on matching the apparatus geometry, subject species, trial structure, and scoring rules to the behavioral construct under study. 1
Light-dark transition protocols depend on stable geometry, consistent trial timing, and pre-defined scoring rules. Without those controls, light-zone time can be shifted by motivation, locomotion, light level, odor, cue salience, or handling rather than the intended behavioral construct. 1
This methods section summarizes setup, endpoint definitions, common confounds, sample output, adjacent assays, and reporting details needed to evaluate Light/Dark Box results alongside the product specifications. 1
§ 2
Methods
2.1 Procedure
Light-dark transition with standardized setup, trial timing, and endpoint extraction.
Pre-test setup
- 1.Define construct: Pre-register whether the study uses Light/Dark Box for anxiety behavior, screening, cohort comparison, or apparatus validation.
- 2.Calibrate apparatus: Verify two-compartment chamber with controlled bright and dark zones, visibility, lighting, surface condition, cue placement, and camera field of view before animals enter the room.
- 3.Set scoring rules: Define light-zone time, omissions, exclusions, latency cutoffs, and event thresholds before acquisition starts.
- 4.Control carryover: Use consistent cleaning, handling, acclimation, and inter-trial timing so odor, stress, and fatigue do not become hidden treatment variables.
Trial sequence
- 1.Start trial: Place the subject at the protocol-defined start location and begin synchronized video or event logging.
- 2.Record behavior: Capture light-zone time, path order, latency, dwell time, and relevant zone or arm events throughout the trial.1
- 3.Apply endpoint rules: Score only committed entries or events that meet the pre-defined body-position and timing criteria.
- 4.End and reset: Stop at the maximum duration, completion criterion, or humane endpoint, then clean and reset the apparatus.
- 5.Export QC: Review tracking loss, outlier latency, immobility, omissions, and apparatus notes before group-level analysis.
Critical methodological constraints
- Illumination intensity. Document illumination intensity because it can shift light-zone time independent of the intended construct.
- Door size. Keep door size stable across cohorts and sessions.
- Prior handling. Audit prior handling before interpreting group differences.
- Locomotor activity. Report locomotor activity when it changes engagement, exploration, or measurable trial completion.
- Strain baseline. Flag strain baseline during QA because it often explains apparent assay failure.2
2.2 Measurement & Analysis
Core Light/Dark Box endpoints for behavioral interpretation and apparatus quality control.
Light-zone time
Exploration-anxiety balance
Light-zone time is the primary endpoint for this page and should be paired with latency and quality-control flags.1
Transition latency
Latency and initiation
Transition latency helps distinguish task performance from motivation, freezing, fatigue, or handling effects.
Compartment transitions
Spatial or zone strategy
Compartment transitions captures how the subject solved the task, not only whether it reached the endpoint.
Dark-zone dwell
Engagement control
Dark-zone dwell identifies omissions, low exploration, sensor dropouts, or species-specific non-response.
Tracking dropouts
Quality-control flag
Tracking dropouts should be reviewed before exporting final group summaries.
+ Additional metrics: trial duration, zone dwell, event count, path efficiency, tracking confidence, exclusions, and session-level notes.
2.3 light-zone time ratio (analysis)
A compact percentage summary for Light/Dark Box output.
§ 3
Results
PubMed publication counts, sample apparatus output, and recent papers from a dated PubMed snapshot.
3.1 Publication trends
PubMed volume and co-occurring behavioral methods for Light/Dark Box studies.
3.2 Sample apparatus output
Representative Light/Dark Box output for methods review and endpoint interpretation.
3.3 Recent findings (PubMed)
- Sep 2026PMID: 42777894
Prenatal Ethanol Exposure and Adolescent Stress Are Associated, in Male Rats, with a Compulsive-Like Phenotype and Alterations in Microbiota Composition and Neuroimmune Gene Expression.
Fabio MC, Sanchez M, Marengo L, et al.. Alcohol. 2026 Sep 23.
Prenatal ethanol exposure (PEE) alters neurobehavioral function, yet the factors associated with these effects, particularly in interaction with stress, remain poorly understood.
- Sep 2026PMID: 42778931
Vicarious defeat stress (VDS) is not a simple substitute for chronic social defeat stress (CSDS): a comparative study on behavioral and molecular mechanisms in both stress-induced anxiety- and depression-like behaviors.
Sun XR, Chen YX, Zhang XJ, et al.. Behav Brain Funct. 2026 Sep 22.
Social stress is a fundamental environmental factor driving the pathophysiology of neuropsychiatric disorders. Chronic social defeat stress (CSDS) and vicarious defeat stress (VDS) are two widely used social stress paradigms, with VDS initially proposed as an alternative to CSDS.
- Sep 2026PMID: 42759908
Heterospecific play, or rat tickling, enhances positive affect towards humans without altering anxiety-related behaviors in female and male Sprague Dawley rats.
Paranzino EE, Poshni AA, Kaufman MN, et al.. Physiol Behav. 2026 Sep 18.
Rodent handling methods influence stress, affective state, and behavior in laboratory rodents, which can decrease, but also potentially increase, unwanted variability in outcome measures.
- Sep 2026PMID: 42754030
Oral supplementation of 6'-sialyllactose in early-life enhances cognitive function in mice via modulating gut microbiota and promoting brain myelination.
Yang M, Luo Y, Wu S, et al.. J Dairy Sci. 2026 Sep 17.
This study aimed to investigate the effects of early-life oral supplementation with 6'-sialyllactose (6'-SL) on neurobehavioral development in mice and the potential mechanisms involving the microbiota-gut-brain (MGB) axis.
- Sep 2026PMID: 42744214
METTL16 maintains photoreceptor integrity via splicing fidelity, mRNA stability, and translational regulation.
Ren J, Liu W, Zou R, et al.. J Adv Res. 2026 Sep 15.
N6-methyladenosine (m6A) RNA modification is essential for retinal homeostasis. Pathogenic mutations in U6 snRNA have recently been identified in families with retinitis pigmentosa (RP), underscoring the importance of precise RNA processing in photoreceptor survival.
- 2026PMID: 42756304
GPR55 deletion increases anxiety- and depression-like behaviors and modifies amygdalar GABAAα2 expression.
García-Gutiérrez MS, Illescas L, Gasparyan A, et al.. Front Pharmacol. 2026.
GPR55 has attracted attention for its anti-inflammatory, neuroprotective, and neurotransmitter-modulating properties, suggesting a role in mood regulation. Here, we aimed to clarify the contribution of GPR55 to emotional responses.
§ 4
Discussion
Limitations of the paradigm, methodological caveats, and current directions.
4.1 Common confounds
Variables that can shift Light/Dark Box results apart from the effect under study.
Illumination intensity
Illumination intensity can change apparent Light/Dark Box performance without reflecting the intended behavioral construct. Control it in setup and report it in methods.
Door size
Door size can change apparent Light/Dark Box performance without reflecting the intended behavioral construct. Control it in setup and report it in methods.
Prior handling
Prior handling can change apparent Light/Dark Box performance without reflecting the intended behavioral construct. Control it in setup and report it in methods.
Locomotor activity
Locomotor activity can change apparent Light/Dark Box performance without reflecting the intended behavioral construct. Control it in setup and report it in methods.
Strain baseline
Strain baseline can change apparent Light/Dark Box performance without reflecting the intended behavioral construct. Control it in setup and report it in methods.
4.2 Construct validity caveats
Light/Dark Box is strongest when endpoint definitions, apparatus settings, and exclusion rules are specified before testing. Treat a single summary metric as a screening signal, then confirm interpretation with latency, engagement, comparator assays, and quality-control review. 1
4.3 Special considerations
When should I choose Light/Dark Box?
Choose Light/Dark Box when the research question matches anxiety-like conflict testing between protected dark occupancy and bright-zone exploration. and the lab can control illumination intensity, door size, and trial timing.
What setup variables should be specified before testing?
Specify species, cohort size, apparatus dimensions, lighting, tracking method, automation level, cleaning workflow, endpoint definitions, and exclusion criteria before data collection begins.
What makes the data interpretable?
Interpretation is strongest when the apparatus configuration, trial timing, scoring thresholds, confound controls, and comparator assays are documented together with the primary endpoint.
4.4 Current directions
Quarterly editorial review of emerging Light/Dark Box methodology. Q2 2026
Methods
Endpoint standardization
Define light-zone time, latency, exclusions, and engagement flags before comparing cohorts.
Emerging
Automated scoring
Camera and event-log workflows can reduce observer burden and improve consistency when zone definitions and event thresholds are validated.
Methods
Comparator batteries
Light/Dark Box should link to adjacent maze, motor, or motivation assays when interpretation depends on controls.
Emerging
Integrated method reporting
Apparatus dimensions, protocol fit, tracking compatibility, and endpoint definitions should be reported together so results are easier to reproduce.
§ 5
References
10 selected methods and validation references for Light/Dark Box.
- Dudchenko PA. An overview of the tasks used to test working memory in rodents. Neurosci Biobehav Rev. 2004;28(7):699-709. doi:10.1016/j.neubiorev.2004.09.002
- Shoji H, et al. Comprehensive behavioral test battery for mice. Curr Protoc Mouse Biol. 2012;2:153-187. Find source
- Vorhees CV, Williams MT. Assessing spatial learning and memory in rodents. ILAR J. 2014;55(2):310-332. Find source
- Lalonde R. The neurobiological basis of spontaneous alternation. Neurosci Biobehav Rev. 2002;26(1):91-104. doi:10.1016/S0149-7634(01)00041-0
- Walf AA, Frye CA. The use of the elevated plus maze as an assay of anxiety-related behavior in rodents. Nat Protoc. 2007;2(2):322-328. doi:10.1038/nprot.2007.44
- Pellow S, Chopin P, File SE, Briley M. Validation of open:closed arm entries in an elevated plus-maze as a measure of anxiety in the rat. J Neurosci Methods. 1985;14(3):149-167. doi:10.1016/0165-0270(85)90031-7
- Crawley JN, Goodwin FK. Preliminary report of a simple animal behavior model for the anxiolytic effects of benzodiazepines. Pharmacol Biochem Behav. 1980;13(2):167-170. doi:10.1016/0091-3057(80)90067-2
- File SE, Wardill AG. Validity of head-dipping as a measure of exploration in a modified hole-board. Psychopharmacologia. 1975;44(1):53-59. Find source
- Walsh RN, Cummins RA. The Open-Field Test: a critical review. Psychol Bull. 1976;83(3):482-504. doi:10.1037/0033-2909.83.3.482
- Brown RE, Corey SC, Moore AK. Differences in measures of exploration and fear in MHC-congenic C57BL/6J and B6-H-2K mice. Behav Genet. 1999;29(4):263-271. Find source
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