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. 2018 Sep 5;99(5):1040–1054.e5. doi: 10.1016/j.neuron.2018.07.046

Figure 7.

Figure 7

Spontaneous Turn-Responsive Cells Are Also Activated during Visual Offset Perturbation-Induced Turns

(A) Time course of average fluorescence of all layer 2/3 neurons (n = 1,154 neurons) during spontaneous contraversive (left) and ipsiversive (right) turns executed throughout training (days 1 to 8). Neurons are sorted by their selectivity during contraversive turns.

(B) Average neuronal activity of contraversive neurons (marked by blue and red box in A) during spontaneous contraversive (blue) and ipsiversive (red) turns. Shading indicates SEM over neurons (n = 616).

(C) Pearson’s correlation coefficient of the population vector during contraversive and ipsiversive turns as a function of time around turn onset (black line, gray shading marks standard deviation over turns). Horizontal green lines mark mean (solid) and standard deviation (dashed) of random correlation. Horizontal black line marks time bins in which correlation is significantly different from chance (gray indicates bins that are not significant).

(D) Same as (A), but for visual offset perturbation-induced turns executed during training days 3 to 8. Sorting of neurons is the same as in (A).

(E) Same as (B), but for visual offset perturbation-induced turns executed during training days 3 to 8. Initially, contraversive neurons are activated during both contraversive and ipsiversive induced turns.

(F) Same as (C), but for visual offset perturbation-induced turns. Correlation of population vectors during induced turns is initially positive and only becomes negative approximately 2 s after onset of the visual offset perturbation.

(G) Same as (A), but for layer 5 PT neurons (n = 560 neurons).

(H) Same as (B), but for layer 5 PT neurons (n = 229 neurons, as selected in G).

(I) Same as (C), but for layer 5 PT neurons.

(J) Same as (D), but for layer 5 PT neurons.

(K) Same as (E), but for layer 5 PT neurons.

(L) Same as (F), but for layer 5 PT neurons. In contrast to layer 2/3, we find no evidence of a positive correlation of population vectors in layer 5 PT neurons.