Journal
INTERNATIONAL JOURNAL OF NEUROSCIENCE
Volume 119, Issue 10, Pages 1584-1601Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207450802328367
Keywords
fMRI; form-from-motion; global motion; LOC; MT; visual motion
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Funding
- Canadian Institutes of Health Research
- Natural Sciences and Engineering Research Council of Canada
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We used functional Magnetic Resonance Imaging (fMRI) to explore the areas underlying the processing of two similar motion stimuli that evoke different types of processing. The results indicated that while form-from-motion (FFM) stimuli activated both lateral occipital complex (LOC) and MT complex (MT+), only the LOC remained significantly activated when contrasted with a global motion stimulus (GMS) with different coherence levels. Because of the large number of common characteristics shared between the stimuli, this contrast enabled us to isolate the regions implicated in form processing. The GMS on the other hand only activated MT+, reaching maximal intensity for low coherence. Overall, these data illustrate how two similar motion stimuli can elicit the participation of different cortical visual regions.
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