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Identifying natural images from human brain activity
A challenging goal in neuroscience is to be able to read out, or decode, mental content from brain activity. Recent functional magnetic resonance imaging (fMRI) studies have decoded orientation,Expand
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Sparse coding and decorrelation in primary visual cortex during natural vision.
Theoretical studies suggest that primary visual cortex (area V1) uses a sparse code to efficiently represent natural scenes. This issue was investigated by recording from V1 neurons in awake behavingExpand
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Natural speech reveals the semantic maps that tile human cerebral cortex
The meaning of language is represented in regions of the cerebral cortex collectively known as the ‘semantic system’. However, little of the semantic system has been mapped comprehensively, and theExpand
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Reconstructing Visual Experiences from Brain Activity Evoked by Natural Movies
Quantitative modeling of human brain activity can provide crucial insights about cortical representations [1, 2] and can form the basis for brain decoding devices [3-5]. Recent functional magneticExpand
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Do We Know What the Early Visual System Does?
We can claim that we know what the visual system does once we can predict neural responses to arbitrary stimuli, including those seen in nature. In the early visual system, models based on one orExpand
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A Continuous Semantic Space Describes the Representation of Thousands of Object and Action Categories across the Human Brain
Humans can see and name thousands of distinct object and action categories, so it is unlikely that each category is represented in a distinct brain area. A more efficient scheme would be to representExpand
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Neural responses to polar, hyperbolic, and Cartesian gratings in area V4 of the macaque monkey.
1. We studied the responses of 103 neurons in visual area V4 of anesthetized macaque monkeys to two novel classes of visual stimuli, polar and hyperbolic sinusoidal gratings. We suspected on bothExpand
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Spatial frequency and orientation tuning dynamics in area V1
Spatial frequency (SF) and orientation tuning are intrinsic properties of neurons in primary visual cortex (area V1). To investigate the neural mechanisms mediating selectivity in the awake animal,Expand
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Neural mechanisms of form and motion processing in the primate visual system
Our visual system uses the information contained in the two-dimensional images on the retina to generate a rich set of perceptions about the characteristics of our external three-dimensional world.Expand
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Bayesian Reconstruction of Natural Images from Human Brain Activity
Recent studies have used fMRI signals from early visual areas to reconstruct simple geometric patterns. Here, we demonstrate a new Bayesian decoder that uses fMRI signals from early and anteriorExpand
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