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Animal
Mouse, Rat

Tail Suspension Test

Product Code:40182/40183

Antidepressant drugs and depression animal model genetic screening are commonly conducted by using the Tail Suspension Test (TST). This test is based on the aversive effect of hanging a mouse of rat by the tail, which elicits its struggling moving upwards in an attempt to escape (which is obviously not possible).

The struggling attempt tends to be shorter in duration and translates into animal immobility in depressed animals and recovers by use of antidepressants. The test is video-tracking based by measuring in one or multiple animals the immobility during the test. The Ugo Basile system comes complete with a U-shaped chamber to run more animals at the time and a hook where the animal is kept hanging. The camera positioned in front of the chambers detects the immobility in multiple animals simultaneously.

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Background

  • The test normally lasts a few minutes (about 5) and measures the proportion of tail climbing versus immobility
  • The concept behind the test is that, although depression is a complex disorder, some aspects can be measured in a lab setting, for example exploiting the fact that stress-induced immobility does correlate with depression in rodents.
  • Immobility is interpreted as behavioral despair, similarly to what happens in the Forced Swim Porsolt Test.

Simple to set-up, accurate and for multiple animals

  • The Ugo Basile Tail Suspension System is very simple in its construction using a U-shaped chamber with a hook attached to the lid of the chamber.
  • A specific grey color of the background maximizes contrast with animals of all colors for accurate video-tracking and in addition, custom colors are available
  • Many chambers (up to 46) can be used at the same time and the immobility of the animals scored, by using a one or multiple cameras positioned in front of the animals.
  • The software automatically scores immobility and allows the user to also manually score behaviors by the use of pre-assigned keys.
  • Data are saved as text, graphical and statistical reports, including raw data that can be seamlessly exported into Excel.

Features

Benefits

Easy to assembly and mat grey colored

Works in automatic mode, with video tracking, on both light and dark animals

Divider + Lid and hook parts to be used as Porsolt divider for multiple animals or as multiple animal tail suspension

Works as divider for multiple Porsolt devices or as a stand-alone tail suspension

Capable to measure immobility in > 10 animals at the time with multiple cameras in light or darkness

High throughput, while using only 1 software and 1 or multiple cameras

Compatible with Porsolt Forced Swim Test, also in “Combo” version

Allows a low cost, high effectiveness combo system for multiple mice and rat Porsolt and Tail Suspension Test

Physical

Animal

Tail Suspension for Mice and Small Rats
SKU 40183

Tail Suspension for Large Rats
SKU 40182

Width 

236 mm 

340 mm

Depth 216 mm 316  mm

Height

470 mm

622 mm

The animal is kept hanging by its tail at about 10 centimeters from the ground for about 5 minutes. During this time the animal tries to escape showing a a tail climbing behavior, until a behavioral despair occurs. The tail climbing is longer in animals which are not depressed or that have been given anti-depressant drugs, so that the measurement of immobility gives an indication of the depression state of the animal.

The translational power of the test has been questioned because the human depression condition is a long-lasting condition, while the TST test is a short experiment. For this reason, some prefer to use it as a tool to measure antidepressant effects of drugs, rather than a proxy for depression states.

In any case the TST, together with the Porsolt Forced Swim test are still the most used test to assess depression in rodents, as shown by the amount of citations exceeding 50,000.

Tail Suspension
40182 Tail Suspension for Large Rats
40183 Tail Suspension for Mice and small rats

40122-321

Lid only for Tail Suspension for Large Rats (requires 40122-320 Porsolt Dividers)
40123-321 Lid only for Tail Suspension for Mice and Rats (requires 40123-320 Porsolt Dividers)
Options
60000-FST ANY-maze for Porsolt and Tail Suspension Test immobility scoring
47400-040 BW USB camera with 1.8-12 mm day & night varifocal lens
E-AU 119 Table tripod for cameras
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.