The Cogent project was started in 1995. The aim was to develop a computer package that could be used by a novice researcher in the FIL to design experimental stimuli for brain imaging and psychophysical studies. In 1999-2002 this package was completely rewritten as a collaborative project involving the LON, FIL and ICN to provide PC compatibility, with greatly improved visual graphic capability.
Cogent has now been made freely available to the wider scientific community via this web distribution. We do however request that you comply with some simple conditions and that you provide us with some basic details so that we can monitor how Cogent is being distributed. Your details will be covered by the Data Protection Act 1998 and will not be given to any third party.
Cogent is available in two forms:
- Cogent Graphics, developed at the LON, is a graphics toolbox for MATLAB on the PC. It can be used to generate realtime graphical animations for use as stimuli in vision research and to monitor subject input via keyboard and mouse.
Cogent 2000, developed at the FIL and the ICN, is a complete PC-based software environment for functional brain mapping experiments, containing commands useful for presenting scanner-synchronised visual stimuli (Cogent Graphics), auditory stimuli, mechanical stimuli, and taste and smell stimuli. It is also used in monitoring key presses and other physiological recordings from the subject.
Cogent Graphics is updated on a different schedule to Cogent 2000 and so you may want to check that you have the latest versions of these packages.