Recruitment of the middle temporal area by tactile motion in congenital blindness
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Recruitment of the middle temporal area by tactile motion in congenital blindness. / Ptito, Maurice; Matteau, Isabelle; Gjedde, Albert; Kupers, Ron.
I: NeuroReport, Bind 20, Nr. 6, 2009, s. 543-547.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Recruitment of the middle temporal area by tactile motion in congenital blindness
AU - Ptito, Maurice
AU - Matteau, Isabelle
AU - Gjedde, Albert
AU - Kupers, Ron
N1 - Keywords: Adult; Blindness; Humans; Middle Aged; Motion Perception; Physical Stimulation; Positron-Emission Tomography; Temporal Lobe; Touch Perception; Visual Pathways; Young Adult
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
U2 - 10.1097/WNR.0b013e3283279909
DO - 10.1097/WNR.0b013e3283279909
M3 - Journal article
C2 - 19240660
VL - 20
SP - 543
EP - 547
JO - NeuroReport
JF - NeuroReport
SN - 0959-4965
IS - 6
ER -
ID: 20688973