ArticleNeuroImage2015
Nonlinear population receptive field changes in human area V5/MT+ of healthy subjects with simulated visual field scotomas.
Article in NeuroImage, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Visual Field Reconstruction Using fMRI-Based Techniques.Translational vision science & technology · 2021Article
- Visual Field Reconstruction in Hemianopia Using fMRI Based Mapping Techniques.Frontiers in human neuroscience · 2021Article
- A validation framework for neuroimaging software: The case of population receptive fields.PLoS computational biology · 2020Article
- Article
- Homeostatic plasticity in human extrastriate cortex following a simulated peripheral scotoma.Experimental brain research · 2017Article
- Probing Human Visual Deficits with Functional Magnetic Resonance Imaging.Annual review of vision science · 2016Review
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Authors and funding
5 authors.
Funding
Abstract
There is extensive controversy over whether the adult visual cortex is able to reorganize following visual field loss (scotoma) as a result of retinal or cortical lesions. Functional magnetic resonance imaging (fMRI) methods provide a useful tool to study the aggregate receptive field properties and assess the capacity of the human visual cortex to reorganize following injury. However, these methods are prone to biases near the boundaries of the scotoma. Retinotopic changes resembling reorganization have been observed in the early visual cortex of normal subjects when the visual stimulus is masked to simulate retinal or cortical scotomas. It is not known how the receptive fields of higher visual areas, like hV5/MT+, are affected by partial stimulus deprivation. We measured population receptive field (pRF) responses in human area V5/MT+ of 5 healthy participants under full stimulation and compared them with responses obtained from the same area while masking the left superior quadrant of the visual field ("artificial scotoma" or AS). We found that pRF estimations in area hV5/MT+ are nonlinearly affected by the AS. Specifically, pRF centers shift towards the AS, while the pRF amplitude increases and the pRF size decreases near the AS border. The observed pRF changes do not reflect reorganization but reveal important properties of normal visual processing under different test-stimulus conditions.
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Registered trials
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