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.
journal_name
Neuroreportjournal_title
Neuroreportauthors
Ptito M,Matteau I,Gjedde A,Kupers Rdoi
10.1097/WNR.0b013e3283279909subject
Has Abstractpub_date
2009-04-22 00:00:00pages
543-7issue
6eissn
0959-4965issn
1473-558Xjournal_volume
20pub_type
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