File:Activations contrast chromatic vs. achromatic.jpg

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English: Cognitive activation projection on surface maps with the two chains. Activations were obtained for the contrast chromatic vs. achromatic. Only highly active clusters were projected onto the surface map. Left: Using software BALC, Left: left hemisphere (95% of the projected pixels were included in V4); Right: right hemisphere (70% of the projected pixels were included in V4). Right: Using software BrainVoyager, Left: left hemisphere (76% overlap); Right: right hemisphere (73% overlap). In this example we show the overlap on the BV surface. The overlap score was however computed in the volume (the surface V4 area was back projected in the volume rather than projecting the activated voxels on the surface; see Materials and Methods).
Date Published: 19 May 2015
Source Bordier C, Hupé J-M and Dojat M (2015) Quantitative evaluation of fMRI retinotopic maps, from V1 to V4, for cognitive experiments. Front. Hum. Neurosci. 9:277. doi: 10.3389/fnhum.2015.00277 http://journal.frontiersin.org/article/10.3389/fnhum.2015.00277/full
Author Bordier C, Hupé J-M and Dojat M

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