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Open Field - Locomotor Activity

Open Field with Mouse Wheels

Features

  • Fusion Software Supports up to 16 Cages per PC
  • Up to 12 PhotoBeam Axes per Cage
  • 16 PhotoBeams per Axis
  • Captures 100 Data points per second per Cage(all 12 Axes)
  • Stagger Start/Stop Switches Integrated into each PhotoBeam Axis
  • Advanced Diagnostic Utilities
  • Records Complete Experimental Data
  • Advanced Playback of Experiments
  • Post-Experiment Mutable Sample Duration
  • Comprehensive Variable List with Selectable Units
  • Comprehensive Security Features
  • Modular and Extensible Fusion Software (XP/Vista Compatible)
  • USB Compatible/CE Compliant

Requires

Can Be Combined With

The Monitor

Each Open Field monitor consists of sets of 16 light beams arrays in the horizontal X and Y axes. The hardware detects beams broken by the animal so that the software can determine the location of the rodent within the cage. Additionally, each cage contains Start/Stop buttons on each side. These buttons may be used to start and stop experiments for individual rodents when the researcher is not in proximity to the PC. Each monitor consists of a node which is physically attached to the cage frame and has a small unobtrusive profile. The node's simple connections to the PC and sensors make set up effortless. Each node captures 100 frames per second from its respective monitor and supports up to 12 sensor pairs. Sensor pairs have 16 infrared light beams that traverse the animal monitor and can be arranged in an unlimited number of configurations. Only three pairs are needed to track an animal in the horizontal plane and record rearing behavior. Additional sensor pairs can be used to reveal hole poke behavior, behavior in a multi level cage etc.

The Software

The heart of the open field locomotor system is the Fusion Software. A wide variety of experiments can be designed and run with ease. It is capable of recording and time stamping every cage event, and can be used to run multi-animal, multi-day experiments.
Once the experiment data is recorded, it can be archived and reanalyzed as many times as needed. In addition, as improvements and additions to the software become available, archived data can be reanalyzed using the new features. Includes a powerful locomotor zone mapping module and time-adjustable path plotter w/ multi-path and multi-experiment overlay.
Because of the cutting edge security and reliability features in this system the user can be confident that the data is authentic and accurate.

Using the System for Hole Poke

The open field system can study hole poke/nose poke behavior. A baited or non-baited hole board is placed in the standard animal cage. Hole poke data includes number of hole pokes and hole poke time in seconds. The unit consists of an elevated platform with 16 equally spaced holes. Each hole is large enough for an animal to puts its head fully into the hole without being able to pass completely through to the other side. Located under each hole is a small food/reward cup. Each cup is also provided with a removable screen. When the screen is placed over the cup, the animal is able to see and smell the food/reward, but cannot retrieve the reward. Light beam sensors are located between the platform and the food cups. These sensors register the specific hole the animal is investigating. In a typical experiment, the researcher would place a small food/reward pellet in each of the 16 cups. Cups designated, as target holes would be left uncovered. All other cups would be covered with screens. The animal is placed on the platform and allowed to investigate holes at will. As each hole is investigated, the system records the time, duration and location of the query. The subject animal’s efforts are rewarded only when it visits the target hole(s). The experiment can be made to terminate when the animal has visited one or all of the target holes or when a specified duration has elapsed. As the experiment is repeated, a normal animal will show fewer mistakes (nose poke into holes covered with screens) and a shorter time to reach the target holes(s). This system is ideal for memory and learning studies.

Using the System for Light/Dark Studies

The open field system can study hole poke/nose poke behavior. A baited or non-baited hole board is placed in the standard animal cage. Hole poke data includes number of hole pokes and hole poke time in seconds. The unit consists of an elevated platform with 16 equally spaced holes. Each hole is large enough for an animal to puts its head fully into the hole without being able to pass completely through to the other side. Located under each hole is a small food/reward cup. Each cup is also provided with a removable screen. When the screen is placed over the cup, the animal is able to see and smell the food/reward, but cannot retrieve the reward. Light beam sensors are located between the platform and the food cups. These sensors register the specific hole the animal is investigating. In a typical experiment, the researcher would place a small food/reward pellet in each of the 16 cups. Cups designated, as target holes would be left uncovered. All other cups would be covered with screens. The animal is placed on the platform and allowed to investigate holes at will. As each hole is investigated, the system records the time, duration and location of the query. The subject animal’s efforts are rewarded only when it visits the target hole(s). The experiment can be made to terminate when the animal has visited one or all of the target holes or when a specified duration has elapsed. As the experiment is repeated, a normal animal will show fewer mistakes (nose poke into holes covered with screens) and a shorter time to reach the target holes(s). This system is ideal for memory and learning studies.

Using the System with Novel Object

The activity monitor can be used to study animal behavior in the presence of novel objects. Fusion Software supports zone-mapping, which allows one or more (concentric) zones to be created around the novel object(s). The system will report animal interactions with the object(s) as well as time/activity in the concentric zones.