Dear Editor,The adult human visual system is capable of reshaping its oculomotor control and sensory coding to adapt to impoverished visual inputs.When one's central vision is deprived,a spared part of the periphe...Dear Editor,The adult human visual system is capable of reshaping its oculomotor control and sensory coding to adapt to impoverished visual inputs.When one's central vision is deprived,a spared part of the peripheral retina acts as a pseudo fovea termed as preferred retinal locus(PRL).In people with normal vision,a PRL can be induced via oculomotor training with simulated central vision loss[1,2].展开更多
The recall of learned temporal sequences by a visual cue is an important form of experience-based neural plasticity.Here we observed such reactivation in awake human visual cortex using intracranial recording.After re...The recall of learned temporal sequences by a visual cue is an important form of experience-based neural plasticity.Here we observed such reactivation in awake human visual cortex using intracranial recording.After repeated exposure to a moving dot,a flash of the dot was able to trigger neural reactivation in the downstream receptive field along the motion path.This effect was observed only when the cue appeared near the receptive field.The estimated traveling speed was faster compared to the activation induced by the real motion.We suggest a range-limited,time-compressed reactivation as a result of repeated visual exposure in awake human visual cortex.展开更多
When a target is surrounded by nearby flankers,it becomes difficult to identify or discriminate its feature.This phenomenon is known as visual crowding(Pelli and Tillman,2008).It is ubiquitous in peripheral vision and...When a target is surrounded by nearby flankers,it becomes difficult to identify or discriminate its feature.This phenomenon is known as visual crowding(Pelli and Tillman,2008).It is ubiquitous in peripheral vision and occurs in everyday activities such as reading and visual search.As a major bottleneck in conscious perception and object recognition,crowding has been explained by a lack of sufficient resolution in the visual system(He et al.,1996;Liu et al.,2009).Due to this limit,the target-flanker distance needs to exceed a critical spacing.In other words,target identification would not be affected unless the distractors are placed outside the“crowded window”,termed as the crowding zone(Toet and Levi,1992).展开更多
基金supported by the National Natural Science Foundation of China(31971031and 31930053)STI2030-Major Projects(2021ZD0203600)supported by NIH R01-EY017707.
文摘Dear Editor,The adult human visual system is capable of reshaping its oculomotor control and sensory coding to adapt to impoverished visual inputs.When one's central vision is deprived,a spared part of the peripheral retina acts as a pseudo fovea termed as preferred retinal locus(PRL).In people with normal vision,a PRL can be induced via oculomotor training with simulated central vision loss[1,2].
基金supported by the National Natural Science Foundation of China(31971031,31930053,31671168,31421003)Beijing Municipal Science and Technology Commission(Z181100001518002)。
文摘The recall of learned temporal sequences by a visual cue is an important form of experience-based neural plasticity.Here we observed such reactivation in awake human visual cortex using intracranial recording.After repeated exposure to a moving dot,a flash of the dot was able to trigger neural reactivation in the downstream receptive field along the motion path.This effect was observed only when the cue appeared near the receptive field.The estimated traveling speed was faster compared to the activation induced by the real motion.We suggest a range-limited,time-compressed reactivation as a result of repeated visual exposure in awake human visual cortex.
文摘When a target is surrounded by nearby flankers,it becomes difficult to identify or discriminate its feature.This phenomenon is known as visual crowding(Pelli and Tillman,2008).It is ubiquitous in peripheral vision and occurs in everyday activities such as reading and visual search.As a major bottleneck in conscious perception and object recognition,crowding has been explained by a lack of sufficient resolution in the visual system(He et al.,1996;Liu et al.,2009).Due to this limit,the target-flanker distance needs to exceed a critical spacing.In other words,target identification would not be affected unless the distractors are placed outside the“crowded window”,termed as the crowding zone(Toet and Levi,1992).
