english: So we quantified this behavior using custom locomotor tracking software developed with my collaborator Pietro Perona, who's in the electrical engineering division here at CalTech.
non_english: Izmerili smo ovo ponašanje putem posebnog softvera za praćenje kretanja, koji smo razvili sa mojim saradnikom Pjetrom Peronom, sa odseka elektrotehnike  ovde na Kalteku.