Gravity and Known Size Calibrate Visual Information to Time Parabolic Trajectories
Catching a ball in a parabolic flight is a complex task in which the time and area of interception are strongly coupled, making interception possible for a short period. Although this makes the estimation of time-to-contact (TTC) from visual information in parabolic trajectories very useful, previou...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-08-01
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| Series: | Frontiers in Human Neuroscience |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fnhum.2021.642025/full |
| _version_ | 1819119066893254656 |
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| author | Borja Aguado Joan López-Moliner |
| author_facet | Borja Aguado Joan López-Moliner |
| author_sort | Borja Aguado |
| collection | DOAJ |
| description | Catching a ball in a parabolic flight is a complex task in which the time and area of interception are strongly coupled, making interception possible for a short period. Although this makes the estimation of time-to-contact (TTC) from visual information in parabolic trajectories very useful, previous attempts to explain our precision in interceptive tasks circumvent the need to estimate TTC to guide our action. Obtaining TTC from optical variables alone in parabolic trajectories would imply very complex transformations from 2D retinal images to a 3D layout. We propose based on previous work and show by using simulations that exploiting prior distributions of gravity and known physical size makes these transformations much simpler, enabling predictive capacities from minimal early visual information. Optical information is inherently ambiguous, and therefore, it is necessary to explain how these prior distributions generate predictions. Here is where the role of prior information comes into play: it could help to interpret and calibrate visual information to yield meaningful predictions of the remaining TTC. The objective of this work is: (1) to describe the primary sources of information available to the observer in parabolic trajectories; (2) unveil how prior information can be used to disambiguate the sources of visual information within a Bayesian encoding-decoding framework; (3) show that such predictions might be robust against complex dynamic environments; and (4) indicate future lines of research to scrutinize the role of prior knowledge calibrating visual information and prediction for action control. |
| first_indexed | 2024-12-22T05:58:52Z |
| format | Article |
| id | doaj.art-4ec0877c63a64a51948767201a3e5c1e |
| institution | Directory Open Access Journal |
| issn | 1662-5161 |
| language | English |
| last_indexed | 2024-12-22T05:58:52Z |
| publishDate | 2021-08-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Human Neuroscience |
| spelling | doaj.art-4ec0877c63a64a51948767201a3e5c1e2022-12-21T18:36:36ZengFrontiers Media S.A.Frontiers in Human Neuroscience1662-51612021-08-011510.3389/fnhum.2021.642025642025Gravity and Known Size Calibrate Visual Information to Time Parabolic TrajectoriesBorja AguadoJoan López-MolinerCatching a ball in a parabolic flight is a complex task in which the time and area of interception are strongly coupled, making interception possible for a short period. Although this makes the estimation of time-to-contact (TTC) from visual information in parabolic trajectories very useful, previous attempts to explain our precision in interceptive tasks circumvent the need to estimate TTC to guide our action. Obtaining TTC from optical variables alone in parabolic trajectories would imply very complex transformations from 2D retinal images to a 3D layout. We propose based on previous work and show by using simulations that exploiting prior distributions of gravity and known physical size makes these transformations much simpler, enabling predictive capacities from minimal early visual information. Optical information is inherently ambiguous, and therefore, it is necessary to explain how these prior distributions generate predictions. Here is where the role of prior information comes into play: it could help to interpret and calibrate visual information to yield meaningful predictions of the remaining TTC. The objective of this work is: (1) to describe the primary sources of information available to the observer in parabolic trajectories; (2) unveil how prior information can be used to disambiguate the sources of visual information within a Bayesian encoding-decoding framework; (3) show that such predictions might be robust against complex dynamic environments; and (4) indicate future lines of research to scrutinize the role of prior knowledge calibrating visual information and prediction for action control.https://www.frontiersin.org/articles/10.3389/fnhum.2021.642025/full3D perceptioncalibrationinternal modelsoptic flowprior knowledgeTTC |
| spellingShingle | Borja Aguado Joan López-Moliner Gravity and Known Size Calibrate Visual Information to Time Parabolic Trajectories Frontiers in Human Neuroscience 3D perception calibration internal models optic flow prior knowledge TTC |
| title | Gravity and Known Size Calibrate Visual Information to Time Parabolic Trajectories |
| title_full | Gravity and Known Size Calibrate Visual Information to Time Parabolic Trajectories |
| title_fullStr | Gravity and Known Size Calibrate Visual Information to Time Parabolic Trajectories |
| title_full_unstemmed | Gravity and Known Size Calibrate Visual Information to Time Parabolic Trajectories |
| title_short | Gravity and Known Size Calibrate Visual Information to Time Parabolic Trajectories |
| title_sort | gravity and known size calibrate visual information to time parabolic trajectories |
| topic | 3D perception calibration internal models optic flow prior knowledge TTC |
| url | https://www.frontiersin.org/articles/10.3389/fnhum.2021.642025/full |
| work_keys_str_mv | AT borjaaguado gravityandknownsizecalibratevisualinformationtotimeparabolictrajectories AT joanlopezmoliner gravityandknownsizecalibratevisualinformationtotimeparabolictrajectories |