Multiband EPI in brain functional mapping an fMRI study with rhyme judgment tasks

Recent multiband EPI acquisition techniques show advantages in spontaneous brain functional connectivity analyses and diffusion imaging. In this work, we investigated the potentials of fast imaging in task-based fMRI studies. Particularly, we utilized conventional and multiband (MB) EPI techniques to study brain functional mapping under phonological processing with rhyming judgment tasks. Despite the lower spatial SNR per image volume due to the faster TR acquisitions, the MB EPI produces stronger statistical power in activation detection because of higher temporal sampling rate. Results also demonstrated that the MB technique produces stronger or similar detection power with much reduced acquisition time.

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