Dear list,
What can I infer from one group's response to a parametric regressor being larger than the other? My initial interpretation was that their neural activity more closely matches (i.e. is more correlated with) the regressor. However, I wondered what would happen in the following situation:
Regressor parameters = [1 2 3 4 5];
Group 1 betas = [1 2 3 4 5];
Group 2 betas = [2 4 6 8 10];
i.e. they show identical linear response (same gradient) to the parametric regressor, but one is of twice the magnitude of the other. Would it show a larger parametric response? With the above interpretation this would lead me to believe that Group 2 more closely encodes my parametric, which would not be correct.
Thanks,
Liam
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School of Psychological Sciences
University of Manchester
0161 275 2692
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