Chinese scientists have revealed the neural mechanisms of the visual crowding effect

, using group-sensing field technology based on functional magnetic resonance imaging, Professor Fang Fang of Peking University's School of Psychology and Cognitive Sciences revealed the neural mechanism of visual crowding effect. The results were published June 20 in Current Biology.
visual congestion is common in everyday life. When a target object in the outer field of view is surrounded by other objects, it becomes difficult to distinguish the target object, a phenomenon known as the visual crowding effect. Over the past 100 years, researchers have generally believed that visual congestion is due to the lack of the necessary resolution of the visual system to separate the target stimuli from the side stimuli, resulting in incorrect integration.
group sensory field technology based on functional magnetic resonance imaging is a brain imaging data analysis method developed in recent years. Its greatest advantage is the ability to obtain information about the location and size of each group of solitons in the brain, to separate the solitons that respond to different field of view locations, and to accurately examine the activation of stimuli at different field of view locations.
Based on the group perception field technique of functional magnetic resonance imaging, the researchers found through a series of experiments that the group sensory wild size of early visual cortical V2 played a key role in the visual crowding process, and the smaller the group felt the wild, the weaker the crowding effect.
" study used neuroscience methods to directly validate the most important assumptions about the mechanism of visual crowding effects in the past and identified V2 as a key brain region for visual crowding effects. He Dongjun, the paper's first author, said.
almost all visual stimuli can cause visual congestion, which is even more important after visual impairment caused by a variety of clinical diseases, including low vision, macular degeneration, and dyslesis. "In-depth study of the neural mechanisms of visual crowding not only enables researchers to understand the mechanism of object recognition in visual systems, but also has important clinical significance." He Dongjun said.
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