Research School of Psychology, The Australian National University, Australia.
Research School of Psychology, The Australian National University, Australia.
Neurosci Biobehav Rev. 2015 Aug;55:223-33. doi: 10.1016/j.neubiorev.2015.05.006. Epub 2015 May 12.
Visual perception changes as a function of hand proximity. While various theoretical accounts have been offered for this alteration (attentional prioritisation, bimodal cell involvement, detailed evaluation, and magnocellular neuron input enhancement), the current literature lacks consensus on these mechanisms. The purpose of this review, therefore, is to critically review the existing body of literature in light of these distinct theoretical accounts. We find that a growing number of results support the magnocellular (M-cell) enhancement account, and are difficult to reconcile with general attention-based explanations. Despite this key theoretical development in the field, there has been some ambiguity with interpretations offered in recent papers, for example, equating the existing attentional and M-cell based explanations, when in fact they make contrasting predictions. We therefore highlight the differential predictions arising from the distinct theoretical accounts. Importantly, however, we also offer novel perspectives that synthesises the role of attention and neurophysiological mechanisms in understanding altered visual perception near the hands. We envisage that this theoretical development will ensure that the field can progress from documenting behavioural differences, to a consensus on the underlying visual and neurophysiological mechanisms.
视觉感知会随手的接近而发生变化。虽然已经提出了各种理论解释（注意力优先化、双模态细胞参与、详细评估和大细胞神经元输入增强），但目前的文献对于这些机制还没有达成共识。因此，本次综述的目的是根据这些不同的理论解释，批判性地回顾现有文献。我们发现，越来越多的结果支持大细胞（M 细胞）增强解释，并且难以与基于注意力的一般解释相协调。尽管该领域在理论上取得了重要进展，但在最近的论文中，解释上存在一些模糊性，例如，将现有的注意力和基于 M 细胞的解释等同起来，而实际上它们做出了相反的预测。因此，我们强调了不同理论解释所产生的差异预测。然而，重要的是，我们还提供了新颖的视角，综合了注意力和神经生理学机制在理解手部附近视觉感知变化中的作用。我们设想，这一理论进展将确保该领域能够从记录行为差异，发展到对潜在视觉和神经生理学机制达成共识。
