Figure 1
From: Red muscle activity in bluegill sunfish Lepomis macrochirus during forward accelerations
Examples of data from video, inertial measurement units, kinematic measurements, and electromyography. (A) Data collected from a steady swimming trial at 2.0 L s−1 and (B) an acceleration trial starting at 1.5 L s−1. Fish silhouettes at the top (i) are from one tail beat cycle from the representative trials (labelled 1–6 and spaced out for clarity) and are indicated by grey lines that extend through all traces. The panels below show (ii) forward acceleration (solid black line), (iii) the position of the tail (dash black line), (iv) EMG2 and EMG 3 from both left (red) and right (black) sides of the fish, and (v) roll (dark blue, dashed), pitch (blue), and yaw (brown, dashed). See Movies S1 and S2 for ventral video synchronized with the data shown in A and B, respectively.
