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Fig. 4 | Animal Biotelemetry

Fig. 4

From: Application of a computer vision technique to animal-borne video data: extraction of head movement to understand sea turtles’ visual assessment of surroundings

Fig. 4

The dominant frequency (a) and amplitude of horizontal head movements (b) in green turtles before and after breathing, during cruising swimming and before feeding. BB, AB, SW and BF represent before breathing, after breathing, cruising swimming, and before feeding, respectively. Vertical bars and asterisks represent standard deviations and significant differences, respectively. Lowercase letters represent significant differences by Turkey post hoc test (P < 0.05)

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