Table 4.

Correlations matrix of group × week subgroups for behavioral and neurochemical endpoints assessed by the Goodman and Kruskal’s gamma correlation test.

Endpoints	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
1. Time not moving, s	− 0.6	0.2	0.3	0.3	− 0.3	0.1	0.2	0.0	− 0.2	0.2	0.2	0.2	− 0.3	− 0.2	0.0
2. Distance traveled, cm		− 0.4	− 0.6	− 0.5	0.2	0.0	0.0	0.0	0.0	0.1	− 0.2	0.1	0.1	0.1	− 0.1
3. Time spent top, s			0.4	0.4	− 0.3	− 0.4	− 0.2	− 0.2	0.2	− 0.3	0.1	− 0.2	0.2	− 0.3	0.3
4. Time in light, s				0.1	− 0.1	− 0.1	− 0.4	− 0.1	0.0	− 0.5	0.0	-0.1	0.0	− 0.1	0.2
5. Inter-fish distance, cm					− 0.3	− 0.2	0.0	0.0	0.0	0.0	0.2	− 0.2	0.1	− 0.1	0.1
6. Distance to surface, cm						0.3	0.0	0.2	0.3	0.2	0.3	0.2	0.2	0.4	0.2
7. Time active, cm							0.1	0.2	0.0	0.3	0.3	0.4	− 0.1	0.5	0.1
8. Norepinephrine, pg/mg								0.3	0.0	0.7	0.1	0.4	− 0.2	0.0	− 0.3
9. DOPAC, pg/mg									0.3	0.5	0.3	0.5	0.1	0.6	0.1
10. 5-HIAA, pg/mg										0.2	0.4	0.2	0.6	0.1	0.2
11. Dopamine, pg/mg											0.2	0.6	− 0.1	0.1	− 0.2
12. HVA, pg/mg												0.2	0.4	0.4	0.6
13. Serotonin, pg/mg													− 0.1	0.1	− 0.2
14. 5-HIAA/serotonin ratio														0.2	0.5
15. DOPAC/dopamine ratio															0.3
16. HVA/dopamine ratio															1

Statistically significant correlations are bolded (p < 0.05).

DOPAC 3,4-dihydroxyphenylacetic acid, 5-HIAA 5-hydroxyindoleacetic acid, HVA homovanillic acid.