A low-cost and versatile system for projecting wide-field visual stimuli within fMRI scanners

V. Greco, F. Frijia, K. Mikellidou, D. Montanaro, A. Farini, M. D’Uva, P. Poggi, M. Pucci, A. Sordini, M. C. Morrone, D. C. Burr

Research output: Contribution to journalArticle

Abstract

We have constructed and tested a custom-made magnetic-imaging-compatible visual projection system designed to project on a very wide visual field (~80°). A standard projector was modified with a coupling lens, projecting images into the termination of an image fiber. The other termination of the fiber was placed in the 3-T scanner room with a projection lens, which projected the images relayed by the fiber onto a screen over the head coil, viewed by a participant wearing magnifying goggles. To validate the system, wide-field stimuli were presented in order to identify retinotopic visual areas. The results showed that this low-cost and versatile optical system may be a valuable tool to map visual areas in the brain that process peripheral receptive fields.

Original languageEnglish
JournalBehavior Research Methods
DOIs
Publication statusAccepted/In press - Jun 20 2015

Keywords

  • fMRI
  • Visual projection system
  • Wide-field retinotopy

ASJC Scopus subject areas

  • Psychology(all)
  • Psychology (miscellaneous)
  • Experimental and Cognitive Psychology
  • Arts and Humanities (miscellaneous)
  • Developmental and Educational Psychology

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