biostudies-literatureLi MChinese Government ScholarshipStrategic Research Programnsae027https://www.ebi.ac.uk/biostudies/studies/S-EPMC11037276biostudies-literatureUnknown19(1)Social norms are pivotal in guiding social interactions. The current study investigated the potential contribution of the posterior cerebellum, a critical region involved in perceiving and comprehending the sequential dynamics of social actions, in detecting actions that either conform to or deviate from social norms. Participants engaged in a goal-directed task in which they observed others navigating towards a goal. The trajectories demonstrated either norm-violating (trespassing forbidden zones) or norm-following behaviors (avoiding forbidden zones). Results revealed that observing social norm-violating behaviors engaged the bilateral posterior cerebellar Crus 2 and the right temporoparietal junction (TPJ) from the mentalizing network, and the parahippocampal gyrus (PHG) to a greater exSocial cognitive and affective neuroscienceOne step too far: social cerebellum in norm-violating navigation.PMC11037276SRP57201906040209Heleven EMa QVan Overwalle FPu MBaetens KDeroost NBaeken CLi MfalseOne step too far: social cerebellum in norm-violating navigation.Social norms are pivotal in guiding social interactions. The current study investigated the potential contribution of the posterior cerebellum, a critical region involved in perceiving and comprehending the sequential dynamics of social actions, in detecting actions that either conform to or deviate from social norms. Participants engaged in a goal-directed task in which they observed others navigating towards a goal. The trajectories demonstrated either norm-violating (trespassing forbidden zones) or norm-following behaviors (avoiding forbidden zones). Results revealed that observing social norm-violating behaviors engaged the bilateral posterior cerebellar Crus 2 and the right temporoparietal junction (TPJ) from the mentalizing network, and the parahippocampal gyrus (PHG) to a greater ex2024-01-01T00:00:00Z2024 Apr2026-05-31T03:09:46.795Z2026-05-31T03:06:46.689ZS-EPMC110372763853605110.1093/scan/nsae027