Funding for this research was provided by:
National Natural Science Foundation of China (31930053, 31971031)
Article History
Received: 14 April 2020
Accepted: 1 September 2020
First Online: 4 September 2020
Compliance with ethical standards
:
: The authors declare no conflicts of interest.
: The experimental procedures and protocols have been approved by the human subject review committee of Peking University.
: All subjects gave written, informed consent in accordance with the procedures and protocols approved by the human subject review committee of Peking University.
: We confirm that we have given due consideration to the protection of intellectual property associated with this work and that there are no impediments to publication.
: The codes for stimuli presentation of this study are available upon request.