Fig. 4

An example of FD data extracted from a child in the intact group (displayed in blue on the left) and from the group associated with GD (shown in red on the right) can be seen in polar plots with ten-degree binning and the \(\alpha \) value of 0.1. It is evident that in the case of the intact child, the majority of movements were carried out in approximately the directions of 50\(^\circ \) and 260\(^\circ \), corresponding to the long and relatively straight sections of the upper loop task. Conversely, the movement of the child diagnosed with GD appears to be distributed more chaotically across the plot