Comparing population Receptive Field mapping using VASO-CBV and BOLD
Icaro A.F. Oliveira1,2, Yuxuan Cai1,2, Shir Hofstetter1, Jeroen C.W. Siero1,3, Wietske van der Zwaag1, and Serge O. Dumoulin1,2,4
1Spinoza Centre for Neuroimaging, Amsterdam, Netherlands, 2Experimental and Applied Psychology, VU University, Amsterdam, Netherlands, 3Radiology, University Medical Centre Utrecht, Utrecht, Netherlands, 4Experimental Psychology, Helmholtz Institute, Utrecht University, Utrecht, Netherlands
We extended the use of VASO-CBV to pRF mapping modeling. We show that VASO-CBV data can be used reliably to map polar angle and eccentricity, similar to BOLD-based data. In addition, the pRF size increased systematically from V1 to V3 similarly for BOLD and VASO-CBV estimates. The higher microvascular specificity of VASO-CBV did not result in smaller pRF size estimates. This result suggests that the vascular contribution to the pRF size is not dominant in either VASO-CBV or BOLD-based pRF mapping.
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