Table 2 Mean tempo, standard deviation, vector angle (displaying the average timing of the participants’ performed beat-marking movements relative to the beats presented), and vector length (proportion of movements performed in the measured mean vector angle, a mean vector angle of 1.000 indicates all movements fell within reported vector angle) across four exposures (trials) per subject per stimulus tempo. Tempo and vector length are linear averages of the trial means. Standard deviation is the standard deviation of all intervals across trials. Vector angle is the circular average of the trial means. Each instance where sea Lion Ronan performed movements that were closer to perfect synchrony than a given human subject is highlighted in Blue. Average human performance data across all conditions is included on the bottom row.

From: Sensorimotor synchronization to rhythm in an experienced sea lion rivals that of humans