Video Acquisition Clausole campione

Video Acquisition. Monkey behaviour was recorded through a system of eight high-resolution cameras placed around the cage (four in the upper corners and four at a middle height). We used Dual Gigabit Ethernet Machine vision cameras (mvBlueCOUGAR-XD, Matrix Vision) with a resolution of 1936×1214 at up to 164 frames per second, set to 50Hz. The cameras were equipped with a global shutter with sensor size 1/2” format (5.86μm pixel), a manual C-Mount Lenses with 5 mm focal length (CCTV Lens, KowaOptical Products Co., Ldt) and LEDs ring lights. Each camera had two RJ-45 Gigabit Ethernet connectors with screw-locking and two Industry standard 12-pin locking connectors to provide transmission of images and signals to the computer, and to synchronize all cameras through a synchronization box connected to both cameras and computer. A dedicated, commercially available software for 3D motion data acquisition and analysis - SIMI Motion - was used to load, visualize and preliminary extract the 3D position of the retroreflective markers. In the CHR condition, markers were placed at the end of the sticks used for tactile and visual stimulation whereas in the NER condition they were attached to a custom-made structure secured to the monkey’s headpost (Figure 7).