The hierarchical neural interactions and key signaling molecules that maintain motor stability are not fully understood. Here authors identify that interneuron PVP promotes forward locomotion by activating interneuron AVB and inhibiting interneuron AVA, while interneuron DVC disinhibits interneuron AVA by inhibiting interneuron PVP to trigger reversals in C. elegans, elucidating a key neural principle of hierarchical competing inhibition circuits governing motor stability.
- Yongning Zhang
- Yunzhu Shi
- Shangbang Gao