Availability of unconscious information in human visual cortex: behavioural and neuroimaging experiments with graspable objetcs

根据一个非常有影响力的视觉模型--双通路模型，灵长类的视觉系统被分为腹侧的“视觉-感知”通路和背侧的“视觉-动作”通路。该模型的核心特征之一是假设腹侧流过程与意识感知密切相关，而背侧流过程可以在不引起意识的情况下发生。该模型主要基于神经生理学、单细胞记录和对非人类灵长类动物的损伤研究，以及对脑损伤患者的神经心理学实验。然而，在神经学上完好无损的参与者中，到目前为止，知觉-动作分离的证据很少，也存在争议。这项拟议的研究计划旨在更好地了解背侧和腹侧流对健康大脑中无意识和有意识视觉处理的相对贡献。最终，拟议中的研究结果(涉及行为和神经成像实验)将有助于完善认知神经科学中最有影响力的模型之一。

According to a very influential vision model, the dual-pathway model, the primate visual system is divided into a ventral "vision-for-perception" pathway and a dorsal "vision-for-action" pathway. Among the model's core characteristics is the assumption that ventral stream processes are closely associated with conscious perception, whereas processing in the dorsal stream can occur without giving rise to awareness. The model is primarily based on neurophysiology, single-cell recordings and lesion studies in non-human primates, as well as neuropsychological experiments with brain lesioned patients. In neurologically intact participants, however, evidence for perception-action dissociations has so far been scarce and controversial. The proposed research program aims to better understand the relative contribution of the dorsal and ventral stream to nonconscious and conscious visual processing in the healthy brain. Ultimately, the results of the proposed research (involving behavioral and neuroimaging experiments) will help to refine one of the most influential models in cognitive neuroscience.