Hi all.

I have a run consisting of two conditions, each with 201 trials. However, after model estimation, the generated trial count is 409. Is this because of 201 multiplied by 2 (conditions) + 6 motion parameters + 1 global mean? If I want to extract beta values for both conditions, do I only need to focus on the first 402 beta maps?

I would appreciate any response.

Best,

Yuanyuan