...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of vision >Inflation of subjective perception in peripheral vision
【24h】

Inflation of subjective perception in peripheral vision

机译：周边视觉中主观感知的膨胀

获取原文
   

获取外文期刊封面封底 >>

       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

There is a compelling subjective impression that peripheral vision is colorful and vivid. However, peripheral visual processes carry less information than foveal vision: it is associated with low spatial resolution, low color sensitivity and in general receives little attention compared to the foveal location. How does this low information capacity account for the subjective vividness in peripheral perception We have previously shown that at identical eccentricity, the lack of covert spatial attention can inflate subjective perception, making detection criterion liberal (Rahnev et al 2011 Nature Neuroscience). Our computational model suggests that this is because under the lack of attention, the internal perceptual response may be more variable. Under a somewhat inflexible detection criterion set commonly for both the attended and unattended locations, high variability may mean that the internal response can exceed the criterion more frequently, leading to a liberal detection bias. We hypothesized that the same mechanism of subjective perceptual inflation may be at work in peripheral vision. We investigated this possibility in psychophysical experiments in which subjects detected the presence of Gabor patches in either the fovea or the periphery. Confirming our hypothesis, we found that subjects tended to use a more liberal detection criterion in the periphery than in the center (that is, subjects reported seeing the target more frequently in the periphery). In trying to understand the neurobiological mechanism behind this phenomena, we developed a neuronal model which takes into account the fact that peripheral vision involves a relatively fewer number of neurons with large spatial uncertainty (receptive fields). Assuming the overall sensory response is reflected by pooling information over many neurons, the model gives a plausible explanation as to why peripheral vision produces sensory responses with larger variability, and thereby inflated subjective perception.
机译：有一个令人信服的主观印象，即外围视觉是丰富多彩的。然而，与中央凹视觉相比，周边视觉过程所承载的信息更少：与中央凹视觉相比，它具有较低的空间分辨率，较低的色彩灵敏度，并且通常很少受到关注。如此低的信息容量如何解释外围感知的主观生动性我们之前已经证明，在相同的离心率下，隐蔽的空间注意力的缺乏会导致主观感知膨胀，从而使检测标准变得宽松（Rahnev等，2011 Nature Neuroscience）。我们的计算模型表明，这是因为在缺乏关注的情况下，内部知觉响应可能会更加可变。在通常针对有人值守和无人值守的位置设置的某种不灵活的检测标准下，高可变性可能意味着内部响应可以更频繁地超过该标准，从而导致较大的检测偏差。我们假设主观知觉膨胀的相同机制可能在周围视觉中起作用。我们在心理物理实验中调查了这种可能性，其中受试者检测到中央凹或周边存在Gabor斑块。证实我们的假设，我们发现受试者倾向于在外围使用比在中心更为宽松的检测标准（也就是说，受试者报告在外围看到目标的频率更高）。在试图了解这种现象背后的神经生物学机制时，我们开发了一种神经元模型，该模型考虑了以下事实：外围视觉涉及相对较少数量的具有大空间不确定性（接受场）的神经元。假设通过汇总许多神经元上的信息来反映整体的感觉反应，该模型就周围视觉为何产生具有较大变异性的感觉反应并由此夸大主观感知给出了合理的解释。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号