Attractive and repulsive effects of sensory history concurrently shape visual perception

BMC Biology

Research Article

Jongmin Moon¹  Oh-Sang Kwon¹ 

[1] Department of Biomedical Engineering, Ulsan National Institute of Science and Technology, 50 UNIST-gil, 44919, Ulsan, South Korea;

关键词: Vision;    Perception;    Perceptual bias;    Sensory adaptation;    Aftereffect;    Serial dependence;    Bayesian inference;    Ideal observer;    Encoder-decoder model;   

DOI  :  10.1186/s12915-022-01444-7

 received in 2022-02-03, accepted in 2022-10-19,  发布年份 2022

来源: Springer

【 摘 要 】

BackgroundSequential effects of environmental stimuli are ubiquitous in most behavioral tasks involving magnitude estimation, memory, decision making, and emotion. The human visual system exploits continuity in the visual environment, which induces two contrasting perceptual phenomena shaping visual perception. Previous work reported that perceptual estimation of a stimulus may be influenced either by attractive serial dependencies or repulsive aftereffects, with a number of experimental variables suggested as factors determining the direction and magnitude of sequential effects. Recent studies have theorized that these two effects concurrently arise in perceptual processing, but empirical evidence that directly supports this hypothesis is lacking, and it remains unclear whether and how attractive and repulsive sequential effects interact in a trial. Here we show that the two effects concurrently modulate estimation behavior in a typical sequence of perceptual tasks.ResultsWe first demonstrate that observers’ estimation error as a function of both the previous stimulus and response cannot be fully described by either attractive or repulsive bias but is instead well captured by a summation of repulsion from the previous stimulus and attraction toward the previous response. We then reveal that the repulsive bias is centered on the observer’s sensory encoding of the previous stimulus, which is again repelled away from its own preceding trial, whereas the attractive bias is centered precisely on the previous response, which is the observer’s best prediction about the incoming stimuli.ConclusionsOur findings provide strong evidence that sensory encoding is shaped by dynamic tuning of the system to the past stimuli, inducing repulsive aftereffects, and followed by inference incorporating the prediction from the past estimation, leading to attractive serial dependence.

【 授权许可】

CC BY   
© The Author(s) 2022

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