Quote list0
Your product list is empty!

Animal
Mouse, Rat

Pellet Dispenser for Rats and Mice

Product Code:49104

The Ugo Basile Pellet Dispenser works with pellets between 10-20 mg for mice and 22-45 mg for rats. It has an extremely high delivery accuracy thanks to the redundant photobeam check.

An embedded electronic board manages the DC motor and the photodiodes. An ethernet cable connects the Pellet Dispensers to the 8 channel control unit to independently manage up to 8 pellet dispensers.

The delivery is ensured by TTL signals normally delivered by any Video-Tracking software. A button and an LED on the device ensure manual operation and check. The dispensers can be attached to any maze or operant chambers thanks to special mounts.

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

The pellet dispensers are optional for:

The pellet dispensers can also be operated independently as a quality delivery system for any operant experiment thanks to their easy BNC triggering via TTL.

The high accuracy (virtually no error in pellet delivery) is ensured by the embedded electronics thanks to which the trigger does not only acts on the motor movement but it ensures that the delivery attempt continues until the IR photobeams detects an actual dispensing in the manger.

Features

Benefits

Photobeam-based delivery control

Very high pellet delivery accuracy

Special mounts for each maze Adaptable to any type of maze or operant chambers.

Compatible with 10-45 mg pellets

Mouse and Rat version with broad range of pellets compatible

8-channel control unit, TTL-driven

Ideal for any maze up to 8-arm radial mazes and compatible with all video-tracking software capable of delivering TTLs

GENERAL FEATURES

Target Rodent Mice  Rats

Pellet Caliber

 10-20 mg

22-45 mg

Pellet capacity

 4000 pellet

1000-2000 pellet
Pellet feedback delivery YES  YES

ELECTRICAL FEATURES

Voltage Supply  12 Vdc
Current Supply  2 A

I/O FEATURES

Manual Input Push Button One pellet at one
Digital Input TTL Input 3.3÷5.0 Vdc
Digital Output TTL Output 5 Vdc

Learning and memory can be studied through punishments or positive reinforcements. The latter require the delivery of rewards in response to specific animal behaviors in applications like reward-enforced T-Maze or Y-maze, Radial Maze, Multi-maze, Delta-maze and Operant chambers like the Operant fear conditioning or traditional Operant cages.

1. Operant Conditioning

  • Skinner Boxes: Pellet dispensers are a key component in Skinner boxes, where rodents learn to perform tasks (e.g poking a nose into a hole, like in OPERON and Operant Fear Conditioning) to receive food rewards.
  • Reward-Based Learning: Used to study reinforcement schedules (fixed, variable, ratio, or interval) and the effect of reward on learning and behavior.

2. Cognitive and Memory Studies

  • Spatial Navigation Tasks: In mazes (e.g., Radial Arm Mazes or T-mazes), pellet dispensers are used to reward rodents for correct choices, aiding in studies of spatial learning and memory.
  • Delayed-Response Tasks: Dispensers provide rewards based on a subject's ability to recall and respond after a delay, helping assess working memory.

3. Motivation and Reward Sensitivity

  • Progressive Ratio Tasks: Pellet dispensers are used to assess how hard rodents are willing to work (e.g., number of lever presses) for a food reward, reflecting motivation levels.
  • Preference Testing: Evaluating reward preferences by delivering different types of pellets in choice paradigms.

4. Addiction and Reward Pathways

  • Studying the neurobiology of addiction and how natural rewards (food pellets) compare with drug rewards.
  • Assessing reward sensitivity changes after exposure to addictive substances.

5. Feeding Behavior Studies

  • Meal Pattern Analysis: Automated pellet dispensers help analyze meal size, feeding frequency, and inter-meal intervals.
  • Caloric Regulation: Used in experiments to control and monitor caloric intake for studies on metabolism, obesity, and energy homeostasis.

6. Stress and Anxiety Research

  • Evaluating how stress or anxiety affects reward-seeking behavior by observing changes in task performance or pellet consumption.

Ordering informations

49104 Pellet dispenser 2.0 to be used with Ugo Basile MultiMaze for Mice and Rats (Needs to be completed with the Control Unit for pellet dispensers) no power supply included
49104-A Pellet dispenser 2.0 for Mice and Rats (to be used with ANY-maze Digital interface or TTL signal) external power supply included.

Optionals

49101 Control Unit for pellet dispensers 49104

 

 

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.