It was developed based on recognition tasks that mimic the testing of human amnesia, and is used to evaluate the object recognition memory ability of rodents.
Exploring new environments and new objects is an important way for animals to obtain external information, which does not require external rewards or punishments for motivation. Therefore, it is regarded as a "reward-free" behavioral paradigm, which can reduce the interference of additional variables.
It allows animals to conduct learning and memory tests in a completely natural state, and can better simulate the learning and memory behaviors of humans and primates.