Most studies focus on “receiver,” and relatively few have explored “signaler.” In fact, individual recognition is a task that requires cooperation between the “receiver” and “signaler.” The two parties can form a reciprocal feedback loop between them to interact with each other ( Chen and Hong, 2018). In individual recognition, the recognizer is regarded as “receiver,” and the sending individual is recognized as “signaler” ( Tibbetts and Dale, 2007). Almost all social behaviors require individual recognition. Individual recognition refers to a subset of recognition that occurs when one organism recognizes another based on its unique characteristics ( Dale et al., 2001). Behavioral paradigms which can quantitatively test the recognition ability are described and discussed. We focus on the ability of the animal to recognize individual partners during the interaction between the two parties. If social animals cannot remember familiar conspecifics, the stability of the social group will be destroyed. These findings help us explore potential targeting brain areas or circuits of social communication disorder.įor animals living in social groups, only individuals with social recognition memory can correctly respond to the visitors in cooperative or competitive social situations, such as remembering their mating partner ( Okuyama et al., 2014 Walum and Young, 2018) and recognizing threatening visitors to the animal’s habitats ( Jacobs et al., 2016). Finally, we introduce some possible related molecular mechanisms underlying social recognition memory. This brief review summarizes a brain network underlying social recognition memory and explores the possible relationships between social isolation and social recognition memory. The unique ability for mammals to recognize conspecifics is essential and beneficial when animals conduct daily social activities. Social recognition memory reflects the ability of the social animals to recognize and remember familiar individuals of the same species. 3Guangdong Provincial Key Laboratory of Brain Connectome and Behavior, CAS Key Laboratory of Brain Connectome and Manipulation, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions, Shenzhen, China.2Division of Life Sciences and Medicine, School of Life Sciences, University of Science and Technology of China, Hefei, China.1Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences (CAS), Shenzhen, China.
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