Fig. 4From: The importance of search strategy for finding targets in open terrainThe number of changes of direction on each axis. On the basis of the Fourier analysis, we computed participantsā modal time before changing direction on each axis, using their dominant frequency component. Dividing participantās overall search time by the modal time before changing direction provided an estimate of the number of changes of direction. FigureĀ 4 shows the relationship between the number of changes of direction on the x- and y- axes. Note, non-logged data are plotted throughoutBack to article page