Speech signal and motor trajectories.

<p>The speech signal and motor trajectories (smoothed using a moving average filter) of lips opening velocity (vlio) and acceleration (alio) during utterances containing /b/. Left to right: /ba/, subject ; /ba/, subject ; and /bufalo/, subject . The gray zone denotes the detected start and ending of the plosion. All signals are normalized over the indicated time frame, for visualization purposes.