Sorry Rich - The attached graphs didn't show what I meant to show.
Attached find 1 image where I have selected one voxel in the visual cortex which had a positive BOLD change (img1.png). Regions with high positive correlations
(red/orange) are depicted in the left side of img1.png and show a positive BOLD waveform. BUT, in the thalamus, regions with positive correlation (red/orange) - the BOLD waveform shows a decreasing BOLD waveform (img2.png, right) , which seems as if it should show a negative (blue) correlation?
In the visual cortex, it works correctly: If I pick a red/orange region with high positive correlation
it shows a positive waveform (img2.png, left) and if I pick a region with blue blob, it shows a negative waveform (img2.png, right)

In all cases, I am looking at the correlation of the same, positive-going voxel with these regions.

So, my question is: Why is there a red/orange blob suggesting a positive correlation when the actual
waveform in that region shows a decreasing BOLD response when correlated with a voxel showing
an increasing BOLD response.