Comparison of conventional BOLD and CBV-weighted fMRI iso-orientation column maps in cat visual cortex.
Wang P, Fukuda H, Kim S, Moon C
Dept. of Neurobiology
Assignment of higher conventional BOLD signal change is not clear, because the high BOLD signal change could indicate the active or inactive neuronal sites, depending on the inter-distance between orientation columns and spatial point spread functions of metablic and hemo-dynamic responses. So, here we obtained the orientation column map using conventional BOLD technique and continuous stimulation to increase the sensitivity of orientation. And we compared this BOLD map with the well confirmed CBV-weighed fMRI columnar map to confirm the activation sites of BOLD.