Circuit architecture for somatotopic action selection in invertebrates.


Department of Physics, Graduate School of Science, The University of Tokyo, Tokyo, Japan. Electronic address: [Email]


Invertebrate species have significantly contributed to neuroscience owing to the accessibility they provide to cellular- and molecular-level understanding of brain functions. Somatotopic action selection is one of the key features of animal behavior, and studying this process in invertebrates is potentially a sweet spot in understanding the general relationship between neuronal morphology, circuit structure, and animal behavior. In this review, we introduce circuit architectures that realize somatotopic action selection, from simple reflexes to patterned motor outputs, in different invertebrate species. We then discuss future directions towards understanding the general principles underlying the development and evolution of the circuit architecture that enables sensorimotor transformation and action selection in the animal kingdom.


Action selection,Crayfish,Fruit fly,Invertebrate,Leech,Nematode,Somatotopy,