Eyetrackers for MEG & fMRI use at Cardiffs new brain imaging laboratory

Prof. Krish Singh. Cardiff University

Iviewlr 05032007 101950Cardiff University's new brain imaging laboratory, CUBRIC, is a state-of-the-art facility for both cognitive neuroscience research and clinically based applications of multi-modal neuroimaging. It houses a GE Signa HDx 3-Tesla MR system together with a 275-channel Magnetoencephalography (MEG) system from CTF. Both of these laboratories are fully equipped with associated technologies to support functional neuroimaging, including stimulus presentation hardware and software. It has become increasingly clear that in order to fully characterise the participant's performance on tasks within the scanner, it is critical to monitor eye movements in real-time during the experiment, both from a point of view of monitoring fixation and in the context of a a realisation of the importance of visuo-spatial attention in all cognitive paradigms. In addition, the Psychology school at Cardiff has a strong visual neuroscience research community who are interested in active visual processing i.e. how visual signals are integrated with ocular motor signals. For this application it is crucial to have accurate real-time measures of gaze position. With these applications in mind, CUBRIC has installed SMI eye-trackers in both the MRI and MEG laboratories, giving a common platform for the study of eye-movements during scanning.