Adaptation to visual numerosity changes neural numerosity selectivity
Perceiving numerosity, i.e. the set size of a group of items, is an evolutionarily preserved ability found in humans and animals. A useful method to infer the neural underpinnings of a given perceptual property is sensory adaptation. Like other primary perceptual attributes, numerosity is susceptibl...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-04-01
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| Series: | NeuroImage |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1053811921000719 |
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| author | Andromachi Tsouli Yuxuan Cai Martijn van Ackooij Shir Hofstetter Ben M. Harvey Susan F. te Pas Maarten J. van der Smagt Serge O. Dumoulin |
| author_facet | Andromachi Tsouli Yuxuan Cai Martijn van Ackooij Shir Hofstetter Ben M. Harvey Susan F. te Pas Maarten J. van der Smagt Serge O. Dumoulin |
| author_sort | Andromachi Tsouli |
| collection | DOAJ |
| description | Perceiving numerosity, i.e. the set size of a group of items, is an evolutionarily preserved ability found in humans and animals. A useful method to infer the neural underpinnings of a given perceptual property is sensory adaptation. Like other primary perceptual attributes, numerosity is susceptible to adaptation. Recently, we have shown numerosity-selective neural populations with a topographic organization in the human brain. Here, we investigated whether numerosity adaptation can affect the numerosity selectivity of these populations using ultra-high field (7 Tesla) functional magnetic resonance imaging (fMRI). Participants viewed stimuli of changing numerosity (1 to 7 dots), which allowed the mapping of numerosity selectivity. We interleaved a low or high numerosity adapter stimulus with these mapping stimuli, repeatedly presenting 1 or 20 dots respectively to adapt the numerosity-selective neural populations. We analyzed the responses using custom-build population receptive field neural models of numerosity encoding and compared estimated numerosity preferences between adaptation conditions. We replicated our previous studies where we found several topographic maps of numerosity-selective responses. We found that overall, numerosity adaptation altered the preferred numerosities within the numerosity maps, resulting in predominantly attractive biases towards the numerosity of the adapter. The differential biases could be explained by the difference between the unadapted preferred numerosity and the numerosity of the adapter, with attractive biases being observed with higher difference. The results could link perceptual numerosity adaptation effects to changes in neural numerosity selectivity. |
| first_indexed | 2024-12-20T11:55:37Z |
| format | Article |
| id | doaj.art-a973cfcaeda5416fa76750347f24dea5 |
| institution | Directory Open Access Journal |
| issn | 1095-9572 |
| language | English |
| last_indexed | 2024-12-20T11:55:37Z |
| publishDate | 2021-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | NeuroImage |
| spelling | doaj.art-a973cfcaeda5416fa76750347f24dea52022-12-21T19:41:41ZengElsevierNeuroImage1095-95722021-04-01229117794Adaptation to visual numerosity changes neural numerosity selectivityAndromachi Tsouli0Yuxuan Cai1Martijn van Ackooij2Shir Hofstetter3Ben M. Harvey4Susan F. te Pas5Maarten J. van der Smagt6Serge O. Dumoulin7Department of Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, Utrecht, CS 3584, Netherlands; Corresponding author.The Spinoza Centre for Neuroimaging, Amsterdam, Netherlands; Department of Experimental and Applied Psychology, VU University, Amsterdam, NetherlandsDepartment of Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, Utrecht, CS 3584, NetherlandsThe Spinoza Centre for Neuroimaging, Amsterdam, NetherlandsDepartment of Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, Utrecht, CS 3584, NetherlandsDepartment of Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, Utrecht, CS 3584, NetherlandsDepartment of Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, Utrecht, CS 3584, NetherlandsDepartment of Experimental Psychology, Helmholtz Institute, Utrecht University, Heidelberglaan 1, Utrecht, CS 3584, Netherlands; The Spinoza Centre for Neuroimaging, Amsterdam, Netherlands; Department of Experimental and Applied Psychology, VU University, Amsterdam, NetherlandsPerceiving numerosity, i.e. the set size of a group of items, is an evolutionarily preserved ability found in humans and animals. A useful method to infer the neural underpinnings of a given perceptual property is sensory adaptation. Like other primary perceptual attributes, numerosity is susceptible to adaptation. Recently, we have shown numerosity-selective neural populations with a topographic organization in the human brain. Here, we investigated whether numerosity adaptation can affect the numerosity selectivity of these populations using ultra-high field (7 Tesla) functional magnetic resonance imaging (fMRI). Participants viewed stimuli of changing numerosity (1 to 7 dots), which allowed the mapping of numerosity selectivity. We interleaved a low or high numerosity adapter stimulus with these mapping stimuli, repeatedly presenting 1 or 20 dots respectively to adapt the numerosity-selective neural populations. We analyzed the responses using custom-build population receptive field neural models of numerosity encoding and compared estimated numerosity preferences between adaptation conditions. We replicated our previous studies where we found several topographic maps of numerosity-selective responses. We found that overall, numerosity adaptation altered the preferred numerosities within the numerosity maps, resulting in predominantly attractive biases towards the numerosity of the adapter. The differential biases could be explained by the difference between the unadapted preferred numerosity and the numerosity of the adapter, with attractive biases being observed with higher difference. The results could link perceptual numerosity adaptation effects to changes in neural numerosity selectivity.http://www.sciencedirect.com/science/article/pii/S1053811921000719NumerosityAdaptationTopographic mapsHigh-field 7T fMRI |
| spellingShingle | Andromachi Tsouli Yuxuan Cai Martijn van Ackooij Shir Hofstetter Ben M. Harvey Susan F. te Pas Maarten J. van der Smagt Serge O. Dumoulin Adaptation to visual numerosity changes neural numerosity selectivity NeuroImage Numerosity Adaptation Topographic maps High-field 7T fMRI |
| title | Adaptation to visual numerosity changes neural numerosity selectivity |
| title_full | Adaptation to visual numerosity changes neural numerosity selectivity |
| title_fullStr | Adaptation to visual numerosity changes neural numerosity selectivity |
| title_full_unstemmed | Adaptation to visual numerosity changes neural numerosity selectivity |
| title_short | Adaptation to visual numerosity changes neural numerosity selectivity |
| title_sort | adaptation to visual numerosity changes neural numerosity selectivity |
| topic | Numerosity Adaptation Topographic maps High-field 7T fMRI |
| url | http://www.sciencedirect.com/science/article/pii/S1053811921000719 |
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