Explore the shared or separated neural mechanisms of social exclusion and social segregation and compare differential effects of AVP and OXT on these social interaction function.

A large body of research has shown that there are differences in the neural representation between social exclusion and social segregation, but the results are inconsistent, and the exploration of the neural basis is still insufficient. In addition, there are two mainstream theoretical explanations for these differences, namely the construction-level theory and the emotion-based theory, but there is no consistent theoretical model yet. Therefore, further exploration is necessary to confirm the cognitive and neural mechanisms underlying the differences between social exclusion and social segregation, and to attempt to reveal the theoretical explanations for these differences. In this project, the investigators propose to perform behavioral and functional magnetic resonance imaging (fMRI) techniques to examine the shared or separate neural mechanisms of social exclusion and social segregation (exp 1: social exclusion; exp 2: social separation) and investigate the modulatory effects of OXT/AVP on them (PLC/24IU OXT/20IU AVP).

Inclusion Criteria:

1. Healthy subjects;
2. Without any past or present psychiatric or neurological disorders;
3. Without any current psychotherapeutic medication.

EXclusion Criteria:

1. With any past or present psychiatric or neurological disorders;
2. With any current psychotherapeutic medication.