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Table 1.

Values*of frequency of muscle field potentials of larval swimming activity at different times after hatching

Frequency (Hz)
Larval age (h.p.h.)Tail flicksSpontaneous swimmingShadow responseFP
0.5 6.3±0.9 21.1±1.7  
1.5 12.5±5.2 23.2±3.2 25.5±4.5  NS 
23.6±2.0 31.4±5.2 110.5 <0.00001 
2.5 10.0±1.7 24.7±3.7 31.2±5.0 18.3 <0.00001 
12.1±6.2 27.0±3.4 36.0±6.2 121.6 <0.00001 
3.5 21.3±7.4 33.0±7.9 101.8 <0.00001 
21.4±2.4 35.1±7.4 131.0 <0.00001 
23.4±1.0 30.5±7.3 290.1 <0.00001 
9.0±2.8 29.3±3.6 39.7±6.4 124.7 <0.00001 
Frequency (Hz)
Larval age (h.p.h.)Tail flicksSpontaneous swimmingShadow responseFP
0.5 6.3±0.9 21.1±1.7  
1.5 12.5±5.2 23.2±3.2 25.5±4.5  NS 
23.6±2.0 31.4±5.2 110.5 <0.00001 
2.5 10.0±1.7 24.7±3.7 31.2±5.0 18.3 <0.00001 
12.1±6.2 27.0±3.4 36.0±6.2 121.6 <0.00001 
3.5 21.3±7.4 33.0±7.9 101.8 <0.00001 
21.4±2.4 35.1±7.4 131.0 <0.00001 
23.4±1.0 30.5±7.3 290.1 <0.00001 
9.0±2.8 29.3±3.6 39.7±6.4 124.7 <0.00001 

h.p.h., hours post hatching.

F and P values (ANOVA) indicate significant differences between spontaneous swimming and shadow response frequency (NS, not significant).

*

Values (means ± s.d.; N=9) were chosen from among those represented in Fig. 2.

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