Neural correlates of perceptual similarity masking in primate V1
Visual detection is a fundamental natural task. Detection becomes more challenging as the similarity between the target and the background in which it is embedded increases, a phenomenon termed ‘similarity masking’. To test the hypothesis that V1 contributes to similarity masking, we used voltage se...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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eLife Sciences Publications Ltd
2024-04-01
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| Series: | eLife |
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| Online Access: | https://elifesciences.org/articles/89570 |
| _version_ | 1827278682088013824 |
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| author | Spencer Chin-Yu Chen Yuzhi Chen Wilson S Geisler Eyal Seidemann |
| author_facet | Spencer Chin-Yu Chen Yuzhi Chen Wilson S Geisler Eyal Seidemann |
| author_sort | Spencer Chin-Yu Chen |
| collection | DOAJ |
| description | Visual detection is a fundamental natural task. Detection becomes more challenging as the similarity between the target and the background in which it is embedded increases, a phenomenon termed ‘similarity masking’. To test the hypothesis that V1 contributes to similarity masking, we used voltage sensitive dye imaging (VSDI) to measure V1 population responses while macaque monkeys performed a detection task under varying levels of target-background similarity. Paradoxically, we find that during an initial transient phase, V1 responses to the target are enhanced, rather than suppressed, by target-background similarity. This effect reverses in the second phase of the response, so that in this phase V1 signals are positively correlated with the behavioral effect of similarity. Finally, we show that a simple model with delayed divisive normalization can qualitatively account for our findings. Overall, our results support the hypothesis that a nonlinear gain control mechanism in V1 contributes to perceptual similarity masking. |
| first_indexed | 2024-04-24T08:04:10Z |
| format | Article |
| id | doaj.art-b3781aab4c0f4ab0b0b7457f200ed568 |
| institution | Directory Open Access Journal |
| issn | 2050-084X |
| language | English |
| last_indexed | 2024-04-24T08:04:10Z |
| publishDate | 2024-04-01 |
| publisher | eLife Sciences Publications Ltd |
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| series | eLife |
| spelling | doaj.art-b3781aab4c0f4ab0b0b7457f200ed5682024-04-17T13:37:21ZengeLife Sciences Publications LtdeLife2050-084X2024-04-011210.7554/eLife.89570Neural correlates of perceptual similarity masking in primate V1Spencer Chin-Yu Chen0https://orcid.org/0000-0003-0191-7315Yuzhi Chen1Wilson S Geisler2Eyal Seidemann3https://orcid.org/0000-0003-2841-5948Center for Perceptual Systems, University of Texas at Austin, Austin, United States; Department of Psychology, University of Texas at Austin, Austin, United States; Center for Theoretical and Computational Neuroscience, Austin, United States; Department of Neuroscience, University of Texas at Austin, Austin, United States; Department of Neurosurgery, Rutgers University, New Brunswick, United StatesCenter for Perceptual Systems, University of Texas at Austin, Austin, United States; Department of Psychology, University of Texas at Austin, Austin, United States; Center for Theoretical and Computational Neuroscience, Austin, United States; Department of Neuroscience, University of Texas at Austin, Austin, United StatesCenter for Perceptual Systems, University of Texas at Austin, Austin, United States; Department of Psychology, University of Texas at Austin, Austin, United States; Center for Theoretical and Computational Neuroscience, Austin, United StatesCenter for Perceptual Systems, University of Texas at Austin, Austin, United States; Department of Psychology, University of Texas at Austin, Austin, United States; Center for Theoretical and Computational Neuroscience, Austin, United States; Department of Neuroscience, University of Texas at Austin, Austin, United StatesVisual detection is a fundamental natural task. Detection becomes more challenging as the similarity between the target and the background in which it is embedded increases, a phenomenon termed ‘similarity masking’. To test the hypothesis that V1 contributes to similarity masking, we used voltage sensitive dye imaging (VSDI) to measure V1 population responses while macaque monkeys performed a detection task under varying levels of target-background similarity. Paradoxically, we find that during an initial transient phase, V1 responses to the target are enhanced, rather than suppressed, by target-background similarity. This effect reverses in the second phase of the response, so that in this phase V1 signals are positively correlated with the behavioral effect of similarity. Finally, we show that a simple model with delayed divisive normalization can qualitatively account for our findings. Overall, our results support the hypothesis that a nonlinear gain control mechanism in V1 contributes to perceptual similarity masking.https://elifesciences.org/articles/89570VSD imagingvisual detectionorientation maskinggain control modelneural population dynamicscamouflage |
| spellingShingle | Spencer Chin-Yu Chen Yuzhi Chen Wilson S Geisler Eyal Seidemann Neural correlates of perceptual similarity masking in primate V1 eLife VSD imaging visual detection orientation masking gain control model neural population dynamics camouflage |
| title | Neural correlates of perceptual similarity masking in primate V1 |
| title_full | Neural correlates of perceptual similarity masking in primate V1 |
| title_fullStr | Neural correlates of perceptual similarity masking in primate V1 |
| title_full_unstemmed | Neural correlates of perceptual similarity masking in primate V1 |
| title_short | Neural correlates of perceptual similarity masking in primate V1 |
| title_sort | neural correlates of perceptual similarity masking in primate v1 |
| topic | VSD imaging visual detection orientation masking gain control model neural population dynamics camouflage |
| url | https://elifesciences.org/articles/89570 |
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