过去和现在的目标在视觉搜索中同时表示。

IF 7.2 1区 生物学 Q1 Agricultural and Biological Sciences
PLoS Biology Pub Date : 2026-05-04 eCollection Date: 2026-05-01 DOI:10.1371/journal.pbio.3003779
Damian Koevoet, Dirk Van Moorselaar, Edward Awh, Stefan Van der Stigchel
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引用次数: 0

摘要

视觉选择通常被概念化为空间优先图中目标、刺激和历史驱动的过程。尽管大量的工作详细描述了目标驱动和刺激驱动的选择之间的相互作用,但目标驱动和历史驱动的过程如何共同驱动选择,在很大程度上是未知的。虽然持续的神经放电可能是目标驱动选择的基础,但通常认为活动沉默机制会影响历史驱动选择。由于这些不同的潜在神经机制,同时跟踪目标和历史驱动的神经影响被证明是困难的。本文采用脑电图解码技术同时跟踪和比较目标驱动和历史驱动对搜索的影响。我们首先建立了一个历史驱动的信号:神经解码从之前的试验中密切跟踪目标位置。我们进一步证明了当前和先前目标位置的同时,不同的神经表征。引人注目的是,即使参与者在搜索开始之前就去了即将到来的目标地点,先前的目标地点也会被重新激活。我们的研究结果表明,过去的经历会以一种不灵活的方式被重新激活,甚至在之前的目标与任务完全无关的情况下也会这样做。总之,我们证明了目标驱动和历史驱动的选择在神经上是不同的,并揭示了这两种影响是并行的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Past and present goals are represented concurrently during visual search.

Visual selection is often conceptualized as emerging from goal-, stimulus- and history-driven processes within spatial priority maps. Although extensive work detailed the interplay between goal- and stimulus-driven selection, it is largely unknown how goal- and history-driven processes jointly drive selection. While persistent neural firing likely underlies goal-driven selection, it is generally assumed that activity-silent mechanisms effectuate history-driven selection. Due to these different underlying neural mechanisms, simultaneously tracking goal- and history-driven influences neurally has proven difficult. We here employed EEG decoding techniques to simultaneously track and compare goal- and history-driven influences on search. We first established a history-driven signal: Neural decoding closely tracked the target location from the preceding trial. We further demonstrated simultaneous, distinct neural representations of the current and preceding target locations. Strikingly, even when participants attended an upcoming target location before search could commence, prior target locations were reactivated. Our results show that past experiences are reactivated in an inflexible fashion, and do so even when prior targets are completely task-irrelevant. Together, we demonstrate that goal- and history-driven selection are neurally distinct, and reveal that both influences are represented in parallel.

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来源期刊
PLoS Biology
PLoS Biology BIOCHEMISTRY & MOLECULAR BIOLOGY-BIOLOGY
CiteScore
15.40
自引率
2.00%
发文量
359
审稿时长
3-8 weeks
期刊介绍: PLOS Biology is the flagship journal of the Public Library of Science (PLOS) and focuses on publishing groundbreaking and relevant research in all areas of biological science. The journal features works at various scales, ranging from molecules to ecosystems, and also encourages interdisciplinary studies. PLOS Biology publishes articles that demonstrate exceptional significance, originality, and relevance, with a high standard of scientific rigor in methodology, reporting, and conclusions. The journal aims to advance science and serve the research community by transforming research communication to align with the research process. It offers evolving article types and policies that empower authors to share the complete story behind their scientific findings with a diverse global audience of researchers, educators, policymakers, patient advocacy groups, and the general public. PLOS Biology, along with other PLOS journals, is widely indexed by major services such as Crossref, Dimensions, DOAJ, Google Scholar, PubMed, PubMed Central, Scopus, and Web of Science. Additionally, PLOS Biology is indexed by various other services including AGRICOLA, Biological Abstracts, BIOSYS Previews, CABI CAB Abstracts, CABI Global Health, CAPES, CAS, CNKI, Embase, Journal Guide, MEDLINE, and Zoological Record, ensuring that the research content is easily accessible and discoverable by a wide range of audiences.
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