Children with autism spectrum disorder may not always process the body language movements of another person effectively, especially if they are distracted by something else – according to a study published in MolecularAutism.
Sequences of frames from sample clips of upright biological motion , inverted biological motion and scrambled biological motion .Components used in the stage one analysis as overlaid over the two analyzed bilateral parieto-occipital sites , collapsed across all groups , conditions and tasks Displays were presented on a 26″ ViewSonic® VP2655wb monitor controlled by Neurobehavioral Systems™ Presentation® software.
Participants performed two tasks, henceforth termed “unattended” and “attended.” For each task, they were presented with six five-minute blocks of randomly ordered video clips of all three stimulus types . The unattended task targeted involuntary, automatic processing of biological motion while participants performed a distractor task.
In the attended task, participants were presented with the same video clips. However, instead, participants were asked to judge whether or not the clips depicted human motion by depressing one of two mouse keys . As such, the second task explored intentional processing of biological motion.
In total, 120 distinct video clips were used, 40 of which represented upright point-light displays of canonical biological motion, 40 of which represented inverted point-light displays of canonical biological motion, and 40 of which represented scrambled motion. Stimuli appeared as black against a white background and consisted of approximately twelve dots moving within 5.8° of visual angle.
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