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The effect of reducing the refresh rate of a task-irrelevant window on the temporal and spatial resolution of a task-relevant window

The Korean Journal of Cognitive and Biological Psychology / The Korean Journal of Cognitive and Biological Psychology, (P)1226-9654; (E)2733-466X
2024, v.36 no.3, pp.99-109
https://doi.org/10.22172/cogbio.2024.36.3.001
Yunsoo Yeo
Daun Jung
Cheongil Kim
Jeong Hyeon Park
Jieun Cho
Jeunghwan Choi
Sang Chul Chong
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Abstract

With recent advances in display technology, there is a growing trend in using a large screen divided into multiple windows or connecting multiple displays to use them together. In such scenarios, the screen can be divided into task-relevant and task-irrelevant windows, allowing selective reduction of the refresh rate in the latter to enhance energy efficiency. However, whether the decrease in the refresh rate in the task-irrelevant window affects task performance in the task-relevant window remains unknown. Here, in two experiments, we adopted critical flicker-fusion frequency (CFF) measurement and image quality degradation detection tasks to investigate the impact of reducing the refresh rate of the task-irrelevant window on the temporal and spatial resolution in the task-relevant window. We found that the refresh rate reduction of the task-irrelevant window affected the temporal, but not the spatial resolution of the task-relevant window. These results suggest that the nature of the current task in the task-relevant window must be considered if the refresh rate in the task-irrelevant window is to be reduced in real-world display usage scenarios.

keywords
split screen, temporal frequency, critical flicker-fusion frequency, attentional capture, distractor suppression, 분할 화면, 시간 주파수, 점멸 지각 역치, 주의 포획, 방해 자극 억제

The Korean Journal of Cognitive and Biological Psychology