The level of CnF Vglut2+ neuron activation positively controls locomotor speed in such PD conditions (Figure 5I and J), and mice can slow down and turn when approaching a wall of the open field (Figure 5E and F; Fougère and others 2021) as in intact mice (van der Zouwen and others 2021). Here, SLC17A6 is linked to Parkinson disease.