Human visual cortical gamma reflects natural image structure
نویسندگان
چکیده
منابع مشابه
Visual Cortical Gamma-Band Activity During Free Viewing of Natural Images
Gamma-band activity in visual cortex has been implicated in several cognitive operations, like perceptual grouping and attentional selection. So far, it has been studied primarily under well-controlled visual fixation conditions and using well-controlled stimuli, like isolated bars or patches of grating. If gamma-band activity is to subserve its purported functions outside of the laboratory, it...
متن کاملPredicting Cortical Dark/Bright Asymmetries from Natural Image Statistics and Early Visual Transforms
The nervous system has evolved in an environment with structure and predictability. One of the ubiquitous principles of sensory systems is the creation of circuits that capitalize on this predictability. Previous work has identified predictable non-uniformities in the distributions of basic visual features in natural images that are relevant to the encoding tasks of the visual system. Here, we ...
متن کاملSensitivity to the visual field origin of natural image patches in human low-level visual cortex
Asymmetries in the response to visual patterns in the upper and lower visual fields (above and below the centre of gaze) have been associated with ecological factors relating to the structure of typical visual environments. Here, we investigated whether the content of the upper and lower visual field representations in low-level regions of human visual cortex are specialised for visual patterns...
متن کاملAlpha-Beta and Gamma Rhythms Subserve Feedback and Feedforward Influences among Human Visual Cortical Areas
Primate visual cortex is hierarchically organized. Bottom-up and top-down influences are exerted through distinct frequency channels, as was recently revealed in macaques by correlating inter-areal influences with laminar anatomical projection patterns. Because this anatomical data cannot be obtained in human subjects, we selected seven homologous macaque and human visual areas, and we correlat...
متن کاملNatural Image Statistics and Visual Processing
Cover (inside): A synthetic image generated from Gaussian white noise. The first and second order statistics of this image are close to those of natural images. It has the property of scale invariance and contrast constancy. Tot slot noem ik mijn familie omdat zij er altijd al waren. General Introduction This thesis focuses on the statistics of natural images. The first question that is to be a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: NeuroImage
سال: 2019
ISSN: 1053-8119
DOI: 10.1016/j.neuroimage.2019.06.051