CFS MATLAB toolbox: An experiment builder for continuous flash suppression (CFS) task
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Mikko Nuutinen1, Terhi Mustonen2, Jukka Häkkinen2
1Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, PO Box 9 (Siltavuorenpenger 1 A), Helsinki, Finland. mikko.s.nuutinen@gmail.com.
Abstract:
CFS toolbox is an open-source collection of MATLAB functions that utilizes PsychToolbox-3 (PTB-3). It is designed to allow a researcher to create and run continuous flash suppression experiments using a variety of experimental parameters (i.e., stimulus types and locations, noise characteristics, and experiment window settings). In a CFS experiment, one of the eyes at a time is presented with a dynamically changing noise pattern, while the other eye is concurrently presented with a static target stimulus, such as a Gabor patch. Due to the strong interocular suppression created by the dominant noise pattern mask, the target stimulus is rendered invisible for an extended duration. Very little knowledge of MATLAB is required for using the toolbox; experiments are generated by modifying csv files with the required parameters, and result data are output to text files for further analysis. The open-source code is available on the project page under a Creative Commons License ( http://www.mikkonuutinen.arkku.net/CFS_toolbox/ and https://bitbucket.org/mikkonuutinen/cfs_toolbox ).