Spatial frequency bandwidth of surround suppression
نویسندگان
چکیده
منابع مشابه
Spatial frequency bandwidth of surround suppression tuning curves.
The contrast detection threshold of a grating located in the periphery is increased if a surrounding grating of the same frequency and orientation is present. This inhibition between center and surround has been termed surround suppression. In this work we measured the spatial frequency bandwidth of surround suppression in the periphery for different spatial frequencies (0.5, 1.1, 3, and 5 cycl...
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Electrical brain signals are often decomposed into frequency ranges that are implicated in different functions. Using subdural electrocorticography (ECoG, intracranial EEG) and functional magnetic resonance imaging (fMRI), we measured frequency spectra and BOLD responses in primary visual cortex (V1) and intraparietal sulcus (IPS). In V1 and IPS, 30-120 Hz (gamma, broadband) oscillations allowe...
متن کاملA Unifying Motif for Spatial and Directional Surround Suppression.
In the visual system, the response to a stimulus in a neuron's receptive field can be modulated by stimulus context, and the strength of these contextual influences vary with stimulus intensity. Recent work has shown how a theoretical model, the stabilized supralinear network (SSN), can account for such modulatory influences, using a small set of computational mechanisms. Although the predictio...
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The aim of this study was to investigate the spatial-frequency bandwidth of perceived suprathreshold contrast. It has been shown that for grating stimuli contrast detection thresholds depend on spatial frequency, grating area and the number of orientation components. However, suprathreshold contrast perception exhibits contrast constancy, i.e. suprathreshold contrast matches are independent of ...
متن کاملTitle : A unifying motif for spatial and directional surround suppression 1 Abbreviated title : Surround suppression in MT
20 In the visual system, the response to a stimulus in a neuron’s receptive field can be modulated by 21 stimulus context, and the strength of these contextual influences vary with stimulus intensity. 22 Recent work has shown how a theoretical model, the stabilized supralinear network (SSN), can 23 account for such modulatory influences, using a small set of computational mechanisms. While 24 t...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2011
ISSN: 1534-7362
DOI: 10.1167/11.11.1177