by Newcastle University Comparison of occipital power spectral density of treatment responders and nonresponders based on an average of recordings performed prior to both active and placebo stimulation. The shaded areas represent standard errors of the spectral density estimate. Credit: Ophthalmology (2022). DOI: 10.1016/j.ophtha.2022.06.041 Using a non-invasive stimulation on the brain may be effective in reducing the...
Tag: <span>visual cortex</span>
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Neurons in visual cortex of the brain ‘drift’ over time
Although other studies have documented “representational drift” in neurons in the parts of the brain associated with odor and spatial memory, this result is surprising because neural activity in the primary visual cortex is thought to be relatively stable. The study published in Nature Communications was led by Ji Xia, a recent PhD graduate of the laboratory of Ralf...
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Feedback activity in the visual cortex is necessary for the perception of objects
by Netherlands Institute for Neuroscience Credit: CC0 Public Domain An important function of vision is to segregate relevant figures from irrelevant backgrounds. A visual stimulus drives a cascade of neural activity from low-level to higher-level visual brain areas. The higher areas also provide feedback to the lower areas, where figures elicit more activity than the...