I am analyzing fMRI data related with attention.
fMRI data was acquired while participants performed attentional task.
The task made them respond to stimulus by pressing the button every one second.
TR was 2 second.
Our laboratory has been interested in how long attention is kept, and wanted to investigate it..
I was ordered to design first design every one second, then analyze two sample
(ex: 1s after A stimulus appearance - 2s after A stimulus appearance)
But, I wondered such a method was appropriate..
Is it possible to analyze difference of one second (TR = 2 sec)?
(first level was design with default on SPM)
Jung Eun Shin