Dual Dimensionality Reduction Reveals Independent Encoding of Motor Features in a Muscle Synergy for Insect Flight Control
Fig 6
STA and features reconstruction performance.
Reconstruction error for each decile of wingstrokes averaged across all animals was quantified for the STA and two-feature projections of the torque data using the normalized RMS error (A) and the unexplained, or residual, variance (B). The STA-alone reconstruction uses the spike-triggered average for each individual moth as the basis for comparison. The feature-only reconstruction compares the torque waveform constructed from the motor signals to the two feature projection of the measured waveform (rather than the full measured waveform). This demonstrates how well the motor signals can predict the features themselves rather than the entire within-wingstroke torque. Horizontal lines above each group of bars in (A) indicate statistically separate groups.