Open AccessMonitoring eye movements during fMRI tasks with echo planar images
Author(s) -
Tregellas Jason R.,
Tanabe Jody L.,
Miller David E.,
Freedman Robert
Publication year - 2002
Publication title -
human brain mapping
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.005
H-Index - 191
eISSN - 1097-0193
pISSN - 1065-9471
DOI - 10.1002/hbm.10070
Subject(s) - eye movement , functional magnetic resonance imaging , computer vision , artificial intelligence , hum , neuroimaging , computer science , task (project management) , psychology , neuroscience , management , economics , art , performance art , art history
Abstract Verifying task compliance during functional magnetic resonance imaging (fMRI) experiments is an essential component of experimental design. To date, studies of oculomotor tasks such as smooth pursuit eye movements have either measured task performance outside the magnet and assumed similar performance during functional neuroimaging, or have used MR‐compatible eye movement recording devices, which can be costly and technically difficult to use. We describe a simple method to visualize and quantify eye movements during an imaging experiment using the gradient echo images. We demonstrate that local eye movements will influence whole‐head motion correction procedures, resulting in inaccurate movement parameters and potentially lowering the sensitivity to detect activations. Hum. Brain Mapping 17:238–244, 2002. © 2002 Wiley‐Liss, Inc.