Saccade landing point does not affect transsaccadic integration
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In transsaccadic integration visual information, obtained before and after an eye movement, is combined. Since saccade landing point is very variable, transsaccadic integration needs to be a robust system for it to work in facilitating visual perception. When two stimuli are present, saccade landing point usually lands somewhere intermediate of the two; a phenomenon called the global effect. However, attention does not seem to follow a similar path. Attention might be goal dependent, thereby able to withstand visual noise. To investigate the robustness of transsaccadic integration, a global effect paradigm was used; alongside a target a salient distracter was displayed. Results indicate that the presence of a distracter does not influence the sensitivity to visual information in transsaccadic integration trials. Saccade latency was also investigated; the presence of a distracter elicited a faster eye movement, as compared to eye movements in the absence of a distracter. In conclusion, transsaccadic integration seems to be a robust mechanism that is not affected by saccade landing point. Saccade latency on the other hand, is influenced by the prominence of a stimulus.