Visual trajectory perception in humans: is it lateralized? Clues from online rTMS of the middle-temporal complex (MT/V5).
Inconsistent observations have been reported in the literature regarding the asymmetrical contribution of higher visual areas of the left and right hemispheres to visual motion processing. In the present experiment, we tested for hemispheric asymmetry of the middle-temporal complex (V5/MT), which is a key-component of the visual motion network, by using rTMS applied over left or right V5/MT during a visual trajectory perception task. The results showed that the effect of rTMS was to enhance individual hemispheric asymmetries present when the test was performed without rTMS. The more general meaning of these results is that there are robust individual hemispheric asymmetries in motion perception but no general pattern of hemispheric differences.
Boulinguez
Philippe
P
Centre de Neurosciences Cognitives, CNRS UMR 5229, Université Claude Bernard Lyon 1, France. philippe.boulinguez@isc.cnrs.fr
Savazzi
Silvia
S
Marzi
Carlo Alberto
CA
D000704:Analysis of Variance; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D007700:Kinetics; D008297:Male; D009039:Motion Perception / Q000502:physiology; D010775:Photic Stimulation / Q000379:methods; D011597:Psychomotor Performance / Q000502:physiology; D011930:Reaction Time / Q000502:physiology; D015398:Signal Transduction / Q000502:physiology; D013028:Space Perception / Q000502:physiology; D013702:Temporal Lobe / Q000502:physiology*; D050781:Transcranial Magnetic Stimulation / Q000379:methods*; D014795:Visual Pathways / Q000502:physiology; D014796:Visual Perception / Q000502:physiology*; D055815:Young Adult