Quote list0
Your product list is empty!


Visual Cliff

Product Code:48071

The Visual Cliff test is a simple behavioral test used in neuroscience to determine whether a rodent can see properly and whether it can perceive depth (depth perception). It is one of the fastest and most reliable ways to assess functional vision, especially in mouse strains with genetic mutations that cause blindness or visual deficits.

Before engaging into complex visual assessment tests, the Visual Cliff is a classic device to evaluate the presence of severe visual impairments. It uses a glass or plexiglass surface that creates the illusion of a sudden drop-off, thanks to the fact that the surface is divided into two sections. One section is at a higher level than the other, creating a visual cliff. The animal can see the difference in depth between the two sections due to the clear surface.

An extended warranty can be added for most Ugo Basile products. You can find this information in the ordering information section of each product.
To learn more about the extended warranty, CLICK HERE

More in details, the apparatus consists of:

 

1 - The “shallow” side (near surface)

Under the glass there is a high-contrast checkerboard immediately below the paws (0–1 cm).

It looks solid and safe.

 

2 - The “deep” side

The same checkerboard pattern is placed far below (30–50 cm under the glass).

This creates the visual illusion of a drop-off or cliff.

The mouse always walks on transparent glass/plexiglass, so it is safe. The difference is purely visual.

 

What do we measure with the visual cliff?

It measures how much time the rodent spends:

on the shallow side (appears safe) Vs. the deep side (appears dangerous)

 

Why does it work? 

If the rodent can see, it avoids the deep side because it perceives the drop.

If a mouse is blind,has low visual acuity, has retinal degeneration (e.g., rd1, rd10), or has abnormal visual development, it cannot distinguish between shallow and deep and moves randomly.

 

Features

Benefits

Simple instrument

Gives a rough indication of visual acuity and is not expensive

Customizable

Being a purely mechanical device it can be customized according to scientist preferences

Data are simple and robust Easy data interprentation
Results are simple but reliable Gives a clear indication, although simple of the acuity

 

Physical

Dimensions 40x40x60,5(h)cm
Walls Height 20 cm

The Visual Cliff test is useful for:

  • Assessing whether rodents can see
  • Studying models of blindness (retinitis pigmentosa, albinism, knockouts)
  • Developmental vision studies in pups (P10–P20)
  • Evaluating drug effects or lesions on vision
  • Testing integrity of the visual cortex and subcortical pathways

 

It is a non-invasive, quick (3–5 minutes) and highly reproducible test.

 

The key question the visual cliff test seeks to answer is whether animals show a natural aversion to the perceived drop-off, indicating an innate depth perception ability.

 

Typically, if depth perception has developed, animals will hesitate or avoid walking over the visual cliff, while those who lack this ability will not show the same level of caution and may proceed without hesitation. The test can be used to assess the effect of drugs, the development of depth perception with age, genetic research,etc.

 

How to interpret the results:

1) Mouse with normal vision, Strong preference for the shallow side, Avoids the deep side, shows “stretch-attend posture” (leaning forward to inspect depth)

2) Mouse with visual impairment, Enters the deep side without hesitation, Spends significant time there,  Shows little or no caution

3) Blind mouse, Moves randomly between the two sides, No preference → clear indicator of blindness or severe visual loss

Visual Cliff (What's in the box)

48071

Visual Cliff system for mice. Designed for gross visual assessment through "cliff", NOR and LOR visual tests, both spatial and non spatial (eg. colour vs position)
Back to: Behaviour, Conditioning, Reward

Research insights

Behavioural neuroscience and preclinical research

Understanding how animals learn, remember and respond to environmental stimuli is central to neuroscience research. Behavioural assays in this domain cover a wide range of constructs, including associative learning, memory consolidation, anxiety, fear extinction, social interaction, stress response, addiction and reward processing.

These paradigms are widely used in preclinical neuropharmacology, translational psychiatry and neuroscience research.

Most used paradigms for behavioural neuroscience, conditioning and reward studies

Behavioural neuroscience relies on a broad range of paradigms to study learning, memory, anxiety, fear, stress, social interaction, addiction and reward processing in rodents. Conditioning paradigms include fear conditioning, active avoidance, passive avoidance and operant conditioning, which are used to investigate associative learning, memory retention, avoidance behaviour, reinforcement learning and goal-directed responses.

Startle and prepulse inhibition (PPI) paradigms are used to assess sensorimotor gating and translational models related to neuropsychiatric disorders like schizophrenia. Maze-based paradigms, including Morris water maze, Barnes maze, Y-maze, T-maze, radial arm maze, elevated plus maze and light/dark box, support the study of spatial learning, working memory, reference memory, anxiety-related behaviour and exploratory decision-making.

Open-field, social interaction, conditioned place preference, self-administration and other reward-related paradigms can be combined with video tracking to quantify locomotion, exploration, freezing, thigmotaxis, preference, social behaviour and reward-driven responses.

Operant systems are also designed for the most common Skinner-like experiments or for very complex tasks like the Attentional Set-Shifting protocol, which mimics the Wisconsin Card Sorting (or Cantab) test in humans.

Key measured parameters and behavioural readouts

Behavioural neuroscience studies rely on readouts that quantify learning, memory, fear responses, avoidance behaviour, exploratory activity, sensorimotor gating, social interaction and reward-related behaviour. Key measured parameters include freezing behaviour, response latency, number of avoidances, number of non-responses, intertrial crossings, startle amplitude, prepulse inhibition, locomotor activity, distance travelled, time spent in specific zones, thigmotaxis, exploration patterns, social interaction metrics and reward-related responses across repeated sessions.

These readouts help researchers assess associative learning, memory consolidation, fear extinction, anxiety-related behaviour, sensorimotor gating, addiction, reward processing and cognitive performance in rodent models. Depending on the experimental paradigm, behavioural data may be collected through conditioning chambers, avoidance systems, startle/PPI platforms, operant setups, mazes, open-field arenas or video-tracking systems. The Ugo Basile portfolio includes Fear Conditioning, Startle/PPI, Active and Passive Avoidance, Operant Conditioning systems, mazes and tracking-compatible behavioural arenas.

Ugo Basile instruments for behavioural neuroscience, conditioning and reward studies

For more than 60 years, Ugo Basile has designed and manufactured instruments for behavioural neuroscience, combining classical paradigms with continuously updated technology.

The Fear Conditioning System is designed to assess cued and contextual fear memory through automated freezing detection, with sound-attenuating chambers, VIS/IR illumination and compatibility with tethered animals for advanced techniques such as optogenetics, electrophysiology and fiber photometry. The system can be expanded up to multiple chambers and can also be upgraded to Startle/PPI using the same cubicle and electronics.

The Startle PPI 3.0 system is used to measure sensorimotor gating in rodents through startle responses to pulses and prepulses, with flexible software-driven protocol design and dedicated mouse and rat platforms.

Ugo Basile also offers Operant Conditioning solutions for reinforcement learning, goal-directed behaviour and reward-based experimental paradigms.

For avoidance learning and memory, Ugo Basile provides Active Avoidance and Passive Avoidance systems. Active Avoidance allows researchers to measure avoidances, non-responses, response latency and intertrial crossings in shuttle-box paradigms, while Passive Avoidance is used to assess short- and long-term memory based on fear-motivated learning.

The Conditioned Place Preference (CPP) test is a widely used behavioral paradigm for evaluating the motivational properties of rewarding or aversive experiences. The CPP paradigm provides information on the rewarding or aversive effects of visible and tactile contextual cues associated with drugs.

Frequently Asked Questions

What behavioural paradigms are used in preclinical neuroscience?

Preclinical behavioural neuroscience uses a wide range of paradigms to study learning, memory, anxiety, fear, stress, reward, addiction, social behaviour and exploratory activity. Common paradigms include fear conditioning, active avoidance, passive avoidance, operant conditioning, startle and prepulse inhibition, open field, social interaction tests, conditioned place preference, Morris water maze, Barnes maze, Y-maze, T-maze and radial arm maze.