When we find similar results using several different brain-imaging techniques, we say that we have:

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When we find similar results using several different brain-imaging techniques, we say that we have converging operations. This means that the results obtained from different methods provide convergent evidence towards a common conclusion, which increases the confidence in the findings. Dissociations refer to situations where two cognitive functions are impaired to a different degree following brain damage, while double dissociations refer to situations where two cognitive functions are selectively impaired following damage to different brain regions. Temporal derivatives and inverse solutions are specific techniques used in neuroimaging data analysis.

When We Find Similar Results Using Several Different Brain-Imaging Techniques