Detecting biological motion signals in human and monkey superior colliculus: a subcortical-cortical pathway for biological motion perception.

ABSTRACT: Most vertebrates, including humans, are highly adept at detecting and encoding biological motion, even when it is portrayed by just a few point lights attached to the head and major joints. However, the function of subcortical regions in biological motion perception has been scarcely explored. Here, we investigate the role of the superior colliculus in local biological motion processing. Using high-field (3 T) and ultra-high-field (7 T) functional magnetic resonance imaging, we record the neural responses of the superior colliculus to scrambled point-light walkers (with local kinematics retained) in both humans and male macaque monkeys. Results show that the superior colliculus, especially the superficial layers, selectively responds to local biological motion. Furthermore, dynamic causal

SUBMITTER: Lu X 

PROVIDER: S-EPMC11542025 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature