An automated system for long term and continuous computer compatible recording of feeding, drinking, and general activity behaviors of rodents.

Abstract The system described consisted of individual isolation chambers and electronics which allowed long term animal maintenance and the monitoring of feeding, drinking, and general activity in a manner which did not disturb the rat. We recorded contacts with the feeder and drinker, and digital information about general movement. The exact time when such behavior occurred and its duration were also recorded. Further, we defined an episode of behavior as a series of occurrences with no interruption greater than 10 sec. The raw data describing each such episode were continuously monitored and each appropriately coded episode, when completed, was recorded on computer compatible magnetic tape. Each animal generated approximately 10,000 data entries per week. Thus, the system allows us to examine moment to moment changes in, and interrelationships between, the basic behaviors under surveillance. Further, we can analyze circadian, and other patterns of these behaviors through the use of relatively standard, as well as more specialized, computer programming applied to the recorded data.