The Investigate the Components of Visual Tracking and the Amount of Spatial and Temporal Error in the Bilateral Targeting Task with Dominant and Non-Dominant Hands

The purpose of this study was to investigate the components of visual tracking and spatial and temporal error in the bilateral targeting task in the dominant and non-dominant hand. The participants in the study were 17 right-handed students in the age range of 19-22. They performed the bilateral targeting taskin eight different situations, two temporal difficulties and two spatial difficulties with dominant and non-dominant hands, using a speed-accuracy trade off apparatus with auditory metronome rhythm. The effective target width and timing error were evaluated and compared. Visual searching behavior including number, duration and rate of fixations was also assessed using Binocular Vision Tracking system. The results showed that the effective width of the target, there was no difference between easy task and difficult as well as dominant and non-dominant task, but there was a difference between easy and difficult task in terms of time. There were more errors in the non-dominant hand, the difficult and fast movement. Also, the change in spatial difficulty, temporal and limb difficulty did not have a significant effect on the number and time of visual fixations, but was significant on the rate of visual fixations, so that the average rate of fixations was higher in the non-dominant hand than in the dominant hand. In general, in fast continuous aiming task, timing errors are more affected by the difficulty of the task and hand-dominancy than spatial errors, and less time is spent staring at the target when performing the task with the dominant hand.