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HOME » PRODUCTS » MLOG

Biobserve MLog Home Cage Activity

MLOG

Home Cage Activity Monitoring System

Measuring circadian activity

The infrared sensors of the MLog system measure the activity of an animal by recording the body heat of that animal and its spatial movement. The activity is measured in all three dimensions in the range of the sensor. Since infrared radiation cannot pass through standard cage plastics, sensors in neighbouring cages do not interfere with each other.
The system can be used with any cage size.

Circadian rhythm measured over 17 days with the MLog system

Ten times per second

Each sensor measures the activity of an animal ten times per second (10 Hz), independently of the total number of sensors in use. In competitive systems the data rate decreases with an increasing number of sensors. Although we work with a high data frequency, MLog can run over 24 hours a day 7 days a week and enables you to collect data for your research studies including for phenotyping or to simply monitor the health and welfare of your animals.

Comparing data of two animals

Individual and pooled data

You can divide the animals into groups (e.g. control and drug) and the software calculates and presents the pooled data in real time. Thus you can compare the results of the different groups even while the experiment is ongoing.

Actogram with user definable threshold and instant vizualisation

Real time data analysis and visualization

At the same time, during the experiment the data are also being analyzed and can be presented in user friendly graphs and diagrams. This feature enables you to evaluate the experiment even while it is running so you can decide if you want to continue or stop the experiment and refine the selected parameters.

Further processing of data and graphics

Collected data can be exported to other applications. Further individual data manipulations can then be conducted. All diagrams and graphics which have been generated during the experiment are saved in vector graphic format (wmf) thereby making them easy to integrate and work with in other programs.

Export filters for the data:
*.txt, *.doc, *.csv, *.xls, *.xml

Export filters for the graphs:
*.bmp, *.wmf, *.emf

Phenotyping with the MLog system

The following list shows what kind of phenotypes can be detected with the MLog system based on the Mouse Genome Informatics (MGI) project that provides integrated access to data on the genetics, genomics, and biology of the laboratory mouse.

Take a look at the Mammalian Phenotype Browser for more information

Name of the test (MP term)MP ID
advanced circadian phase [1]2564
arrhythmic circadian persistence2560
delayed circadian phase [2]2565
narcolepsy [3]5279
prolonged circadian period2562
shortened circadian period2563
bradykinesia [4]5156
hyperactivity elicited by ethanol administration 2629
hypoactivity [5]1402
lethargy [6]5202
no spontaneous movement1404
[1] increase in the phase relationship between a temporal synchronizing event (such as light cycle) and a phase reference point of an animal (such as activity onset)
[2] decrease in the phase relationship between a temporal synchronizing event (such as light cycle) and a phase reference point of an animal (such as activity onset
[3] recurring episodes of sleep during normal waking hours and often disrupted sleep during normal sleeping period; often accompanied by catplexy, sleep paralysis
[4] decreased spontaneity and movement
[5] reduced movement from one place to another
[6] mild impairment of consciousness resulting in reduced alertness and awareness; ultimately due to generalized brain dysfunction

 

Take a look at the program tour to see how the system works in detail.



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