Debian Science Psychophysics packages

Stimulus counter-balance is important for many experimental designs. This command-line software creates De Bruijn cycles, which are pseudo-random sequences with arbitrary levels of counterbalance. "Path-guided" de Bruijn cycles may also be created. These sequences encode a hypothesized neural modulation at specified temporal frequencies, and have enhanced detection power for BOLD fMRI experiments.

This graphical environment provides an easy to use, point-and-click interface for creating psychological experiments. In addition to a powerful sketchpad for creating visual stimuli, OpenSesame features a sampler and synthesizer for sound playback. For more complex tasks, OpenSesame supports Python scripting using the built-in editor with syntax highlighting.

Psytoolkit offers

• Scripting language designed for psychological experiments:
• Structure designed for experiments (tasks/trials/trial lists/random selection/blocks).
• Use of bitmaps (png,jpeg,tiff,and many more).
• Use of MPEG videos.
• Read from keyboard, mouse, and external devices.
• Voicekey support via IoLab device
• Easy programming of parallel port and advanced IO cards.
• Use of variables.
• Conditional expressions (if/then/while).
• Easy interfacing with statistical software R for online feedback to participants.
• Easy interfacing with C language.
• It is easy to use.
• Easy functions for visual and auditory stimulus presentation.
• Precise timing of stimulus presentation and data collection.
• Can be used as scripting language, but also comes with a C-library.
• Comes with a questionnaire presenter psyquest
• Online Documentation.

PEBL (Psychology Experiment Building Language) is a system designed for creating psychology and neuroscience experiments and tests. It offers a simple programming language tailor-made for creating and conducting many standard experiments.

The Vision Egg is a programming library that uses standard, inexpensive computer graphics cards to produce visual stimuli for vision research experiments.

Nrec , developed by Friedemann Bunjes and Jan Gukelberger at the Neurology of Tübingen University, is a package for stimulation, data acquisition and experiment control in the flavour of cognitive fMRI research, which has been expanded to include flexible biosignal acquisition and sensory stimulation. It produces Matlab-readable files and generally puts an emphasis on standards like using the comedi Linux data acquisition library, OpenGL, XML parameter file format and hdf5 data storage files format.

Psychlops is a free C++ library to offer the easy way to develop a demonstration of various types of visual stimulus used in the Vision science.

Binary builds are available only for OS X and Windows. Sources available from sf's SVN: http://sourceforge.jp/projects/psychlops/svn/view/cpp/

Tscope is a C/C++ experiment programming library for cognitive scientists. It provides functions for graphics, sound, timing, randomization and response registration.