A hippocampo-cerebellar centred network for the learning and execution of sequence-based navigation

Sci Rep. 2017 Dec 19;7(1):17812. doi: 10.1038/s41598-017-18004-7.

Abstract

How do we translate self-motion into goal-directed actions? Here we investigate the cognitive architecture underlying self-motion processing during exploration and goal-directed behaviour. The task, performed in an environment with limited and ambiguous external landmarks, constrained mice to use self-motion based information for sequence-based navigation. The post-behavioural analysis combined brain network characterization based on c-Fos imaging and graph theory analysis as well as computational modelling of the learning process. The study revealed a widespread network centred around the cerebral cortex and basal ganglia during the exploration phase, while a network dominated by hippocampal and cerebellar activity appeared to sustain sequence-based navigation. The learning process could be modelled by an algorithm combining memory of past actions and model-free reinforcement learning, which parameters pointed toward a central role of hippocampal and cerebellar structures for learning to translate self-motion into a sequence of goal-directed actions.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Basal Ganglia / physiology
  • Cerebellum / physiology*
  • Cerebral Cortex / physiology
  • Computer Simulation
  • Hippocampus / physiology*
  • Learning / physiology*
  • Male
  • Memory / physiology
  • Mice
  • Mice, Inbred C57BL
  • Models, Neurological
  • Neural Pathways / physiology*
  • Orientation / physiology*
  • Space Perception / physiology*