Researchers in the fields of sign language and gesture studies frequently present their participants with video stimuli showing actors performing linguistic signs or co-speech gestures. Up to now, such video stimuli have been mostly controlled only for some of the technical aspects of the video material, leaving open the possibility that systematic differences in video stimulus materials may be concealed in the actual motion properties of the actor’s movements. Computer vision methods such as OpenPose enable the fitting of body-pose models (...) to the consecutive frames of a video clip and thereby make it possible to recover the movements performed by the actor in a particular video clip without the use of a point-based or markerless motion-tracking system during recording. The OpenPoseR package provides a straightforward and reproducible way of working with these body-pose model data extracted from video clips using OpenPose, allowing researchers in the fields of sign language and gesture studies to quantify the amount of motion pertaining only to the movements performed by the actor in a video clip. These quantitative measures can be used for controlling differences in the movements of an actor in stimulus video clips or, for example, between different conditions of an experiment. In addition, the package also provides a set of functions for generating plots for data visualization, as well as an easy-to-use way of automatically extracting metadata from large sets of video files. (shrink)

The neuroscience of language studies the relationship between linguistic phenomena and the structure and functioning of the human brain. In this chapter, the authors focus on the neural basis supporting the remarkable human capacity to effortlessly assemble single words into more complex hierarchical structures, thus enabling the production and comprehension of unbounded arrays of different linguistic expressions. They begin with a brief discussion of language as a biological system that includes a historical sketch of the understanding of language in the (...) brain. The authors provide an overview of the early days of brain‐syntax research in neuropsychology, primarily on the basis of lesion studies. They end with a reflection on the impact that Noam Chomsky's ideas have had on the neuroscience of language. (shrink)