A sensory integration account for time perception.
The connection between stimulus perception and time perception remains unknown. The present study combines human and rat psychophysics with sensory cortical neuronal firing to construct a computational model for the percept of elapsed time embedded within sense of touch. When subjects judged the dur...
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2021-01-01
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| Series: | PLoS Computational Biology |
| Online Access: | https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1008668&type=printable |
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| _version_ | 1850184225973600256 |
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| author | Alessandro Toso Arash Fassihi Luciano Paz Francesca Pulecchi Mathew E Diamond |
| author_facet | Alessandro Toso Arash Fassihi Luciano Paz Francesca Pulecchi Mathew E Diamond |
| author_sort | Alessandro Toso |
| collection | DOAJ |
| description | The connection between stimulus perception and time perception remains unknown. The present study combines human and rat psychophysics with sensory cortical neuronal firing to construct a computational model for the percept of elapsed time embedded within sense of touch. When subjects judged the duration of a vibration applied to the fingertip (human) or whiskers (rat), increasing stimulus intensity led to increasing perceived duration. Symmetrically, increasing vibration duration led to increasing perceived intensity. We modeled real spike trains recorded from vibrissal somatosensory cortex as input to dual leaky integrators-an intensity integrator with short time constant and a duration integrator with long time constant-generating neurometric functions that replicated the actual psychophysical functions of rats. Returning to human psychophysics, we then confirmed specific predictions of the dual leaky integrator model. This study offers a framework, based on sensory coding and subsequent accumulation of sensory drive, to account for how a feeling of the passage of time accompanies the tactile sensory experience. |
| format | Article |
| id | doaj-art-9cb14a03ab8f402e804e2b4c2a1c10aa |
| institution | OA Journals |
| issn | 1553-734X 1553-7358 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS Computational Biology |
| spelling | doaj-art-9cb14a03ab8f402e804e2b4c2a1c10aa2025-08-20T02:17:05ZengPublic Library of Science (PLoS)PLoS Computational Biology1553-734X1553-73582021-01-01171e100866810.1371/journal.pcbi.1008668A sensory integration account for time perception.Alessandro TosoArash FassihiLuciano PazFrancesca PulecchiMathew E DiamondThe connection between stimulus perception and time perception remains unknown. The present study combines human and rat psychophysics with sensory cortical neuronal firing to construct a computational model for the percept of elapsed time embedded within sense of touch. When subjects judged the duration of a vibration applied to the fingertip (human) or whiskers (rat), increasing stimulus intensity led to increasing perceived duration. Symmetrically, increasing vibration duration led to increasing perceived intensity. We modeled real spike trains recorded from vibrissal somatosensory cortex as input to dual leaky integrators-an intensity integrator with short time constant and a duration integrator with long time constant-generating neurometric functions that replicated the actual psychophysical functions of rats. Returning to human psychophysics, we then confirmed specific predictions of the dual leaky integrator model. This study offers a framework, based on sensory coding and subsequent accumulation of sensory drive, to account for how a feeling of the passage of time accompanies the tactile sensory experience.https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1008668&type=printable |
| spellingShingle | Alessandro Toso Arash Fassihi Luciano Paz Francesca Pulecchi Mathew E Diamond A sensory integration account for time perception. PLoS Computational Biology |
| title | A sensory integration account for time perception. |
| title_full | A sensory integration account for time perception. |
| title_fullStr | A sensory integration account for time perception. |
| title_full_unstemmed | A sensory integration account for time perception. |
| title_short | A sensory integration account for time perception. |
| title_sort | sensory integration account for time perception |
| url | https://journals.plos.org/ploscompbiol/article/file?id=10.1371/journal.pcbi.1008668&type=printable |
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