Abnormal beta value

Dear Alfonso,

I have been doing some ROI-to-ROI connectivity analysis and looking at the average effect across all subjects ( I selected bivariate correlation in the first level analysis). I have done a one-sample t-test.

My understanding is that the beta value represents the connectivity strength between pairs of ROI.
However, I have got a significant beta value of -10.26.

I thought that beta was a Fisher-transformed correlation value with a range of value -1 to 1, and so I do not understand how a beta value can be so large.

Could you please share your thought on it?

Many thanks.

Best,
Hugo