Recruitment of the middle temporal area by tactile motion in congenital blindness
Abstract
We used positron emission tomography to investigate whether tactile motion discrimination activates the dorsal visual stream in congenitally blind (CB) participants compared with sighted controls. The tactile stimuli consisted of either static dots, dots moving coherently in one of two possible directions, or in random directions. Although CB and sighted controls performed equally well on the motion discrimination task, only CB showed increased activation in the right middle temporal area. In addition, CB also activated other visual areas including the cuneus and extrastriate area V3. These results indicate that the dorsal visual pathway is activated by tactile motion stimuli in CB, therefore providing additional support for the cross-modal plasticity hypothesis.
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“Additionally, tactile motion discrimination activates dorsal visual stream areas in the congenitally blind (Ptito et al., 2009).”
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- Authors
- Ptito, M., Matteau, I., Gjedde, A., & Kupers, R.
- Affiliations
- Université de Montréal (CA)
- University of Copenhagen (DK)
- Corresponding author
- Kupers, Ron
- Venue
- Neuroreport
- Published
- 2009-04-22
- Volume
- 20
- Issue
- 6
- Pages
- 543-547
- ISSN
- 0959-4965 (ISSN-L)
- OpenAlex
- W1967976608
- Cited by
- 65
- References
- 23
- Citations by year
- 2025: 2 · 2024: 2 · 2023: 3 · 2022: 5 · 2021: 3 · 2020: 3 · 2019: 4 · 2018: 4 · 2017: 3 · 2016: 5 · 2015: 8 · 2014: 4 · 2013: 7 · 2012: 5
- FWCI
- 1.94
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Neuroreport (publishedVersion)
- PubMed (publishedVersion)
- Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
- Funders
- Sundhed og Sygdom, Det Frie Forskningsråd
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Tactile and Sensory Interactions
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Multisensory perception and integration
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Keywords
- congenital blindness, middle temporal area, dorsal stream, cross-modal plasticity, visual cortex activation, cuneus, visual motion perception
- MeSH terms
- Adult, Blindness, Humans, Middle Aged, Motion Perception, Physical Stimulation, Temporal Lobe, Visual Pathways, Positron-Emission Tomography, Touch Perception, Young Adult
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