Memory decay enhances central bias in time perception

Author:

Ueda Natsuki12ORCID,Tanaka Kanji3,Watanabe Katsumi4

Affiliation:

1. National Institute of Mental Health, National Center of Neurology and Psychiatry, Tokyo, Japan

2. Integrative Brain Imaging Center, National Center of Neurology and Psychiatry, Tokyo, Japan

3. Faculty of Arts and Science, Kyushu University, Japan

4. Faculty of Science and Engineering, Waseda University, Japan

Abstract

Temporal expectations are essential for appropriately interacting with the environment, but they can be biased. This tendency, called central bias, places higher weights on expected rather than actual duration distributions when perceiving incoming sensory stimuli. In particular, the central bias is strengthened in order to decrease total response error when incoming sensory stimuli are unclear. In the present study, we investigated whether the central bias was enhanced via memory decay. For this, we used a delayed reproduction task, manipulating retention periods by introducing delays between the sample interval and the reproduction phase (0.4, 2, 4 s in Experiment 1; 0.4, 2, 8 s in Experiments 2 and 3). Through three experiments, we found the gradual strengthening of the central bias as a function of the retention period (i.e., short-term memory decay). This suggests that the integration of temporal expectation, generated from past trials and stored sensory stimuli, in a current trial occurs in the reproduction phase in the delayed reproduction task.

Funder

Mirai program

Japan Society for the Promotion of Science

Moonshot Research and Development

Publisher

SAGE Publications

Subject

Artificial Intelligence,Sensory Systems,Experimental and Cognitive Psychology,Ophthalmology

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