Abstract:
:In a wide variety of neural systems, neurons tuned to a primary dimension of interest often have responses that are modulated in a multiplicative manner by other features such as stimulus intensity or contrast. In this methodological study, we present a demonstration that it is possible to use psychophysical experiments to compare competing hypotheses of multiplicative gain modulation in a neural population, using the specific example of contrast gain modulation in orientation-tuned visual neurons. We demonstrate that fitting biologically interpretable models to psychophysical data yields physiologically accurate estimates of contrast tuning parameters and allows us to compare competing hypotheses of contrast tuning. We demonstrate a powerful methodology for comparing competing neural models using adaptively generated psychophysical stimuli and demonstrate that such stimuli can be highly effective for distinguishing qualitatively similar hypotheses. We relate our work to the growing body of literature that uses fits of neural models to behavioral data to gain insight into neural coding and suggest directions for future research.
journal_name
J Visjournal_title
Journal of visionauthors
DiMattina Cdoi
10.1167/16.9.1subject
Has Abstractpub_date
2016-07-01 00:00:00pages
1issue
9issn
1534-7362pii
2532491journal_volume
16pub_type
杂志文章abstract::Crowding increases with eccentricity and is most readily observed in the periphery. During natural, active vision, however, central vision plays an important role. Measures of critical distance to estimate crowding are difficult in central vision, as these distances are small. Any overlap of flankers with the target m...
journal_title:Journal of vision
pub_type: 杂志文章
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更新日期:2016-09-01 00:00:00
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pub_type: 杂志文章,评审
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journal_title:Journal of vision
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journal_title:Journal of vision
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journal_title:Journal of vision
pub_type: 杂志文章
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更新日期:2010-12-20 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2019-03-01 00:00:00
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Journal of vision
pub_type: 杂志文章
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journal_title:Journal of vision
pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Journal of vision
pub_type: 杂志文章
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