Novel open source R extension package for general-purpose eye tracking results analysis proposed. Now supported features are data loading from SMI eye trackers, different methods of fixations detection, various imaging techniques for raw data, and detected fixations (time sequence, scanpath, heatmap, and dynamic visualization). The modular structure of the package and a detailed description of each function provide a convenient way to further extend the functionality. Effective use of package requires knowledge of R programming language and environment.
A comparison of the parameters of oculomotor activity in the perception of static and dynamic images of the face was made. It is shown that in both static and dynamic conditions, the trajectory of eye movement is determined by the internal structure of the face of the and the functional connections of the facial areas of his face. Differences were found at the level of individual parameters of oculomotor activity: the duration of examination of the face zones, the duration of fixation and the amplitude of saccades. Routes for reviewing static images are fully cyclic in nature. Recurrent fixations in the same zone of interest are poorly expressed, and their contribution to the overall structure of movements is negligible. When perceiving dynamic images, the survey routes have a degenerate, partially reduced character, determined by the current dynamics of facial expressions; the contribution of repeated fixations in the same zone of interest increases.
A microstructural analysis of perception of a partner in communication was carried out. Mute video recordings of 15 clips of a structured conversation in which communicants expressed true and false judgments, were subjected to complex coding. In each 40 ms frame 51 nonverbal signs/102 binary markers indicating the state of the facial zones, the nature of the movements of the head, hands and body were considered. Based on expert estimates, the proportion of frames was calculated, in which each of the markers is present at selected time intervals. Looking at the video clips, 35 observers intuitively, by external features, determined the fragments when the communicator is telling truth and when lying. The frequency and time of occurrence of markers were analyzed. Frequency regression models of “true” and “false” response of communicants were built. It is shown that the required estimates are performed by the observer 1.5—2 seconds before the answer. High-frequency features form a stable core of the impression of the reliability of the communicator’s judgments, complemented with changeable low-frequency features explaining the growth of explanatory power of regression models. Markers have been identified that contribute to adequate perception of the reliability of information reported. The style of non-verbal behavior of people implementing alternative communication strategies is described.
Social life is based on the interaction of community members. The object of our study was microorganisms at different stages of community morphogenesis and in the process of restoring the integrity of social structures. The electrical activity indices of individual cells and groups making up these structures were recorded. In our experiments on the cyanobacteria Oscillatoria terebriformis, myxomycetes Lycogala epidendrum, and yeast Saccharomyces cerevisiae, we obtained electrographic characteristics of the states and event dynamics of social structures, which indicate synchronization processes in solving a common problem in each of the studied communities.