A simple rule to describe interactions between visual categories,European Journal of Neuroscience

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A simple rule to describe interactions between visual categories
European Journal of Neuroscience ( IF 2.7 ) Pub Date : 2020-07-02 , DOI: 10.1111/ejn.14890
Marlene Poncet _{1,

2} , Michele Fabre‐Thorpe ₁ , Ramakrishna Chakravarthi ₃

Affiliation

Humans can rapidly categorise visual objects when presented in isolation. However, in everyday life we encounter multiple objects at the same time. Far less is known about how simultaneously active object representations interact. We examined such interactions by asking participants to categorise a target object at the basic (Experiment 1) or the superordinate (Experiment 2) level while the representation of another object was still active. We found that the “prime” object strongly modulated the response to the target implying that the prime's category was rapidly and automatically accessed, influencing subsequent categorical processing. Using drift diffusion modelling, we show that a prime, whose category is different from that of the target, interferes with target processing primarily during the evidence accumulation stage. This suggests that the state of category‐processing neurons is altered by an active representation and this modifies the processing of other categories. Interestingly, the strength of interference increases with the similarity between the distractor and the target category. Considering these results and previous studies, we propose a general principle that category interactions are determined by the distance from a distractor's representation to the target's task‐relevant categorical boundary. We argue that this principle arises from the specific architectural organisation of categories in the brain.

中文翻译：

描述视觉类别之间相互作用的简单规则

单独显示时，人类可以对视觉对象进行快速分类。但是，在日常生活中，我们会同时遇到多个物体。关于活动对象表示如何同时进行交互的了解还很少。我们通过要求参与者在基本对象（实验1）或上级对象（实验2）级别上对目标对象进行分类来检查这种交互，而另一个对象的表示仍处于活动状态。我们发现“素数”对象强烈调节了对目标的响应，这意味着素数的类别可以快速，自动地访问，从而影响后续的分类处理。使用漂移扩散建模，我们显示了一个与类别不同的质数，主要在证据积累阶段会干扰目标处理。这表明类别处理神经元的状态被主动表示所改变，并改变了其他类别的处理。有趣的是，干扰的强度随着干扰物和目标类别之间的相似性而增加。考虑到这些结果和以前的研究，我们提出了一个总体原则，即类别干扰是由分心者的表示与目标任务相关的类别边界的距离决定的。我们认为，该原理源自大脑中类别的特定架构组织。干扰的强度随着干扰物和目标类别之间的相似性而增加。考虑到这些结果和以前的研究，我们提出了一个总体原则，即类别干扰是由分心者的表示与目标任务相关的类别边界的距离决定的。我们认为，该原理源自大脑中类别的特定架构组织。干扰的强度随着干扰物和目标类别之间的相似性而增加。考虑到这些结果和以前的研究，我们提出了一个总体原则，即类别干扰是由分心者的表示与目标任务相关的类别边界的距离决定的。我们认为，该原理源自大脑中类别的特定架构组织。

更新日期：2020-07-02

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