Park Hyung-Bum
Institute for Mind and Biology, University of Chicago, 940 East 57 Th St., Chicago, IL, 60637, USA.
Psychon Bull Rev. 2025 May 27. doi: 10.3758/s13423-025-02714-5.
Serial dependence, a systematic bias in the perceptual decision of current stimuli toward previously encountered ones, has been debated with regard to its locus of processing, with evidence supporting both perceptual processes and post-perceptual working memory (WM) accounts. This study examined the temporal and process-specific dynamics of serial biases across perception and WM processes by analyzing behavioral responses and mouse trajectories. Participants performed two tasks: an immediate perceptual report requiring color matching on a color-wheel with the target color remained visible, and a delayed WM recall consisting of dual responses, a consolidation report immediately after target and mask offset and a retrieval report after a short delay. The results revealed a shift from repulsive biases in immediate perceptual reports to moderate and stronger attraction in WM consolidation and retrieval reports, respectively. Additionally, mouse trajectory analysis further identified a repulsion-to-attraction transition during WM consolidation, suggesting an interplay between sensory adaptation and mnemonic processes. These findings support a mnemonic origin of positive serial dependence, with independent components of perception and WM jointly shaping the output serial bias.
序列依赖性，即当前刺激的感知决策对先前遇到的刺激的一种系统性偏差，其加工位点一直存在争议，有证据支持感知过程和感知后工作记忆（WM）两种解释。本研究通过分析行为反应和小鼠轨迹，考察了跨感知和工作记忆过程的序列偏差的时间和过程特异性动态变化。参与者执行两项任务：一项即时感知报告任务，要求在色轮上进行颜色匹配，目标颜色保持可见；另一项延迟工作记忆回忆任务，包括双重反应，即在目标和掩蔽消失后立即进行的巩固报告，以及短暂延迟后的检索报告。结果显示，从即时感知报告中的排斥偏差分别转变为工作记忆巩固和检索报告中的适度和更强吸引偏差。此外，小鼠轨迹分析进一步确定了工作记忆巩固过程中从排斥到吸引的转变，表明感觉适应和记忆过程之间存在相互作用。这些发现支持了正向序列依赖性的记忆起源，感知和工作记忆的独立成分共同塑造了输出序列偏差。
