Allowable Limits of Latencies in Delay Control Visual Feedback System
In the current information-driven society, input devices with visual feedback are widely used. However, latency from the moment of input to the appearance of visual feedback on display devices (e.g., a touching screen) is inevitable.
Hence, we conducted subjective experiments to measure the effects of latency on human performances in visual feedback system. As a result, it was confirmed that even with low latency (i.e., below 100 ms), human performance in some types of task exerts negative effects. The results provide suggestions in defining available range of latencies in input devices and make it possible in the future to further examine specific user performances, which helps develop significant indications in GUIs and other fields of user-oriented researches with interactive elements.
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