ZFIN Image: Heap et al., 2018, Fig. 1

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Figure Caption

Fig. 1

The Thalamus Is Selectively Responsive to Dark Looming Stimuli

(A and B) Bar code analysis of individual ROI response rates to ten stimulus presentations in (A) the tectum and (B) the thalamus (stimulus icons represent dark loom, light loom, dark moving spot, and light moving spot, from left to right, and are maintained throughout the rest of the figures). For clarity, nonresponding ROIs are not shaded. The tectum had clear responses to loom stimuli and moving spots in both light/dark configurations (A). The only consistent response of the thalamus was to the dark loom (B).

(C) Across 12 larvae, these responses were significant versus spontaneous activity for all stimuli in the tectum but only for the dark loom in the thalamus.

(D) By plotting the average of all calcium traces in all 10 responsive ROIs in the tectum (black) and thalamus (red), we see no notable differences in response timing or magnitude across stimuli.

^∗p < 0.05, ^∗∗p < 0.005 (two-sample Kolmogorov-Smirnov test with Bonferroni-Holm correction for multiple comparisons).

Acknowledgments

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