Sharpening coarse-to-fine stereo vision by perceptual learning: asymmetric transfer across the spatial frequency spectrum
Neurons in the early visual cortex are finely tuned to different low-level visual features, forming a multi-channel system analysing the visual image formed on the retina in a parallel manner. However, little is known about the potential ‘cross-talk’ among these channels. Here, we systematically inv...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The Royal Society
2016-01-01
|
| Series: | Royal Society Open Science |
| Subjects: | |
| Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.150523 |
| _version_ | 1828468654958706688 |
|---|---|
| author | Roger W. Li Truyet T. Tran Ashley P. Craven Tsz-Wing Leung Sandy W. Chat Dennis M. Levi |
| author_facet | Roger W. Li Truyet T. Tran Ashley P. Craven Tsz-Wing Leung Sandy W. Chat Dennis M. Levi |
| author_sort | Roger W. Li |
| collection | DOAJ |
| description | Neurons in the early visual cortex are finely tuned to different low-level visual features, forming a multi-channel system analysing the visual image formed on the retina in a parallel manner. However, little is known about the potential ‘cross-talk’ among these channels. Here, we systematically investigated whether stereoacuity, over a large range of target spatial frequencies, can be enhanced by perceptual learning. Using narrow-band visual stimuli, we found that practice with coarse (low spatial frequency) targets substantially improves performance, and that the improvement spreads from coarse to fine (high spatial frequency) three-dimensional perception, generalizing broadly across untrained spatial frequencies and orientations. Notably, we observed an asymmetric transfer of learning across the spatial frequency spectrum. The bandwidth of transfer was broader when training was at a high spatial frequency than at a low spatial frequency. Stereoacuity training is most beneficial when trained with fine targets. This broad transfer of stereoacuity learning contrasts with the highly specific learning reported for other basic visual functions. We also revealed strategies to boost learning outcomes ‘beyond-the-plateau’. Our investigations contribute to understanding the functional properties of the network subserving stereovision. The ability to generalize may provide a key principle for restoring impaired binocular vision in clinical situations. |
| first_indexed | 2024-12-11T04:27:21Z |
| format | Article |
| id | doaj.art-cc638e1266ea412e836ba1e2418c8ca1 |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-12-11T04:27:21Z |
| publishDate | 2016-01-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-cc638e1266ea412e836ba1e2418c8ca12022-12-22T01:20:57ZengThe Royal SocietyRoyal Society Open Science2054-57032016-01-013110.1098/rsos.150523150523Sharpening coarse-to-fine stereo vision by perceptual learning: asymmetric transfer across the spatial frequency spectrumRoger W. LiTruyet T. TranAshley P. CravenTsz-Wing LeungSandy W. ChatDennis M. LeviNeurons in the early visual cortex are finely tuned to different low-level visual features, forming a multi-channel system analysing the visual image formed on the retina in a parallel manner. However, little is known about the potential ‘cross-talk’ among these channels. Here, we systematically investigated whether stereoacuity, over a large range of target spatial frequencies, can be enhanced by perceptual learning. Using narrow-band visual stimuli, we found that practice with coarse (low spatial frequency) targets substantially improves performance, and that the improvement spreads from coarse to fine (high spatial frequency) three-dimensional perception, generalizing broadly across untrained spatial frequencies and orientations. Notably, we observed an asymmetric transfer of learning across the spatial frequency spectrum. The bandwidth of transfer was broader when training was at a high spatial frequency than at a low spatial frequency. Stereoacuity training is most beneficial when trained with fine targets. This broad transfer of stereoacuity learning contrasts with the highly specific learning reported for other basic visual functions. We also revealed strategies to boost learning outcomes ‘beyond-the-plateau’. Our investigations contribute to understanding the functional properties of the network subserving stereovision. The ability to generalize may provide a key principle for restoring impaired binocular vision in clinical situations.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.150523visual plasticitystereopsisvision enhancementspecificitygeneralization |
| spellingShingle | Roger W. Li Truyet T. Tran Ashley P. Craven Tsz-Wing Leung Sandy W. Chat Dennis M. Levi Sharpening coarse-to-fine stereo vision by perceptual learning: asymmetric transfer across the spatial frequency spectrum Royal Society Open Science visual plasticity stereopsis vision enhancement specificity generalization |
| title | Sharpening coarse-to-fine stereo vision by perceptual learning: asymmetric transfer across the spatial frequency spectrum |
| title_full | Sharpening coarse-to-fine stereo vision by perceptual learning: asymmetric transfer across the spatial frequency spectrum |
| title_fullStr | Sharpening coarse-to-fine stereo vision by perceptual learning: asymmetric transfer across the spatial frequency spectrum |
| title_full_unstemmed | Sharpening coarse-to-fine stereo vision by perceptual learning: asymmetric transfer across the spatial frequency spectrum |
| title_short | Sharpening coarse-to-fine stereo vision by perceptual learning: asymmetric transfer across the spatial frequency spectrum |
| title_sort | sharpening coarse to fine stereo vision by perceptual learning asymmetric transfer across the spatial frequency spectrum |
| topic | visual plasticity stereopsis vision enhancement specificity generalization |
| url | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.150523 |
| work_keys_str_mv | AT rogerwli sharpeningcoarsetofinestereovisionbyperceptuallearningasymmetrictransferacrossthespatialfrequencyspectrum AT truyetttran sharpeningcoarsetofinestereovisionbyperceptuallearningasymmetrictransferacrossthespatialfrequencyspectrum AT ashleypcraven sharpeningcoarsetofinestereovisionbyperceptuallearningasymmetrictransferacrossthespatialfrequencyspectrum AT tszwingleung sharpeningcoarsetofinestereovisionbyperceptuallearningasymmetrictransferacrossthespatialfrequencyspectrum AT sandywchat sharpeningcoarsetofinestereovisionbyperceptuallearningasymmetrictransferacrossthespatialfrequencyspectrum AT dennismlevi sharpeningcoarsetofinestereovisionbyperceptuallearningasymmetrictransferacrossthespatialfrequencyspectrum |